The following quotations are not intended to be exhaustive, I am only including a few passages which indicate that the fathers sometimes understood the days of creation as long periods of time. This should be taken together with what I wrote in chapter 7, namely, that most of them seem to have understood this as a secondary interpretation, rather than the primary one. For a fuller discussion, I recommend an online book by Robert I. Bradshaw, Creationism and the Early Church, specifically chapter 3, “The Days of Genesis 1,” although it should be noted that he comes at the issue from a specifically young-earth perspective. Another online selection of Church fathers on this issue can be read at “Creation and Genesis” at Catholic Answers. I have limited this to fathers of the second and third centuries, so many important authors, such as Augustine, go unmentioned. This is partially because Augustine’s writings on this issue were extensive; most of them (including The Literal Meaning of Genesis) have been collected into a book recently published with the title On Genesis.
Epistle of Barnabas 15
(circa AD 70-131; pseudonymous)
Further, also, it is written concerning the Sabbath in the Decalogue which [the Lord] spoke, face to face, to Moses on Mount Sinai, “And sanctify ye the Sabbath of the Lord with clean hands and a pure heart.” And He says in another place, “If my sons keep the Sabbath, then will I cause my mercy to rest upon them.” The Sabbath is mentioned at the beginning of the creation [thus]: “And God made in six days the works of His hands, and made an end on the seventh day, and rested on it, and sanctified it.” Attend, my children, to the meaning of this expression, “He finished in six days.” This implieth that the Lord will finish all things in six thousand years, for a day is with Him a thousand years. And He Himself testifieth, saying, “Behold, to-day will be as a thousand years.” Therefore, my children, in six days, that is, in six thousand years, all things will be finished. “And He rested on the seventh day.” This meaneth: when His Son, coming [again], shall destroy the time of the wicked man, and judge the ungodly, and change the sun, and the moon, and the stars, then shall He truly rest on the seventh day. Moreover, He says, “Thou shalt sanctify it with pure hands and a pure heart.” If, therefore, any one can now sanctify the day which God hath sanctified, except he is pure in heart in all things, we are deceived. Behold, therefore: certainly then one properly resting sanctifies it, when we ourselves, having received the promise, wickedness no longer existing, and all things having been made new by the Lord, shall be able to work righteousness. Then we shall be able to sanctify it, having been first sanctified ourselves. Further, He says to them, “Your new moons and your Sabbath I cannot endure.” Ye perceive how He speaks: Your present Sabbaths are not acceptable to Me, but that is which I have made, [namely this,] when, giving rest to all things, I shall make a beginning of the eighth day, that is, a beginning of another world. Wherefore, also, we keep the eighth day with joyfullness, the day also on which Jesus rose again from the dead. And when He had manifested Himself, He ascended into the heavens.
Papias, Fragments 9
(circa AD 110-40)
Taking occasion from Papias of Hierapolis, the illustrious, a disciple of the apostle who leaned on the bosom of Christ, and Clemens, and Pantaenus the priest of [the Church] of the Alexandrians, and the wise Ammonius, the ancient and first expositors, who agreed with each other, who understood the work of the six days as referring to Christ and the whole Church.
Justin Martyr, Dialogue with Trypho 81
(circa 160)
For as Adam was told that in the day he ate of the tree he would die, we know that he did not complete a thousand years. We have perceived, moreover, that the expression, “The day of the Lord is as a thousand years,” is connected with this subject.
Irenaeus, Against Heresies 2:22:1-2
(circa 180)
Moreover, they affirm that He suffered in the twelfth month, so that He continued to preach for one year after His baptism; and they endeavour to establish this point out of the prophet (for it is written, “To proclaim the acceptable year of the Lord, and the day of retribution”), being truly blind, inasmuch as they affirm they have found out the mysteries of Bythus, yet not understanding that which is called by Isaiah the acceptable year of the Lord, nor the day of retribution. For the prophet neither speaks concerning a day which includes the space of twelve hours, nor of a year the length of which is twelve months. For even they themselves acknowledge that the prophets have very often expressed themselves in parables and allegories, and [are] not [to be understood] according to the mere sound of the words.
2. That, then, was called the day of retribution on which the Lord will render to every one according to his works—that is, the judgment. The acceptable year of the Lord, again, is this present time, in which those who believe Him are called by Him, and become acceptable to God—that is, the whole time from His advent onwards to the consummation [of all things], during which He acquires to Himself as fruits [of the scheme of mercy] those who are saved. For, according to the phraseology of the prophet, the day of retribution follows the [acceptable] year; and the prophet will be proved guilty of falsehood if the Lord preached only for a year, and if he speaks of it. For where is the day of retribution? For the year has passed, and the day of retribution has not yet come; but He still “makes His sun to rise upon the good and upon the evil, and sends rain upon the just and unjust.” And the righteous suffer persecution, are afflicted, and are slain, while sinners are possessed of abundance, and “drink with the sound of the harp and psaltery, but do not regard the works of the Lord.” But, according to the language [used by the prophet], they ought to be combined, and the day of retribution to follow the [acceptable] year. For the words are, “to proclaim the acceptable year of the Lord, and the day of retribution.” This present time, therefore, in which men are called and saved by the Lord, is properly understood to be denoted by “the acceptable year of the Lord;” and there follows on this “the day of retribution,” that is, the judgment. And the time thus referred to is not called “a year” only, but is also named “a day” both by the prophet and by Paul, of whom the apostle, calling to mind the Scripture, says in the Epistle addressed to the Romans, “As it is written, for thy sake we are killed all the day long, we are counted as sheep for the slaughter.” But here the expression “all the day long” is put for all this time during which we suffer persecution, and are killed as sheep. As then this day does not signify one which consists of twelve hours, but the whole time during which believers in Christ suffer and are put to death for His sake, so also the year there mentioned does not denote one which consists of twelve months, but the whole time of faith during which men hear and believe the preaching of the Gospel, and those become acceptable to God who unite themselves to Him.
Ibid., 4:16:1.
Moreover, the Sabbath of God (requietio Dei), that is, the kingdom, was, as it were, indicated by created things; in which [kingdom], the man who shall have persevered in serving God (Deo assistere) shall, in a state of rest, partake of God’s table.
Ibid., 5:23:2
Thus, then, in the day that they did eat, in the same did they die, and became death’s debtors, since it was one day of the creation. For it is said, “There was made in the evening, and there was made in the morning, one day.” Now in this same day that they did eat, in that also did they die. But according to the cycle and progress of the days, after which one is termed first, another second, and another third, if anybody seeks diligently to learn upon what day out of the seven it was that Adam died, he will find it by examining the dispensation of the Lord. For by summing up in Himself the whole human race from the beginning to the end, He has also summed up its death. From this it is clear that the Lord suffered death, in obedience to His Father, upon that day on which Adam died while he disobeyed God. Now he died on the same day in which he did eat. For God said, “In that day on which ye shall eat of it, ye shall die by death.” The Lord, therefore, recapitulating in Himself this day, underwent His sufferings upon the day preceding the Sabbath, that is, the sixth day of the creation, on which day man was created; thus granting him a second creation by means of His passion, which is that [creation] out of death. And there are some, again, who relegate the death of Adam to the thousandth year; for since “a day of the Lord is as a thousand years,” he did not overstep the thousand years, but died within them, thus bearing out the sentence of his sin. Whether, therefore, with respect to disobedience, which is death; whether [we consider] that, on account of that, they were delivered over to death, and made debtors to it; whether with respect to [the fact that on] one and the same day on which they ate they also died (for it is one day of the creation); whether [we regard this point], that, with respect to this cycle of days, they died on the day in which they did also eat, that is, the day] of the preparation, which is termed “the pure supper,” that is, the sixth day of the feast, which the Lord also exhibited when He suffered on that day; or whether [we reflect] that he (Adam) did not overstep the thousand years, but died within their limit,—it follows that, in regard to all these significations, God is indeed true. For they died who tasted of the tree; and the serpent is proved a liar and a murderer, as the Lord said of him: “For he is a murderer from the beginning, and the truth is not in him.”
Ibid., 5:28:3
For in as many days as this world was made, in so many thousand years shall it be concluded. And for this reason the Scripture says: “Thus the heaven and the earth were finished, and all their adornment. And God brought to a conclusion upon the sixth day the works that He had made; and God rested upon the seventh day from all His works.” This is an account of the things formerly created, as also it is a prophecy of what is to come. For the day of the Lord is as a thousand years; and in six days created things were completed: it is evident, therefore, that they will come to an end at the sixth thousand year.
Ibid., 5:30:4
But when this Antichrist shall have devastated all things in this world, he will reign for three years and six months, and sit in the temple at Jerusalem; and then the Lord will come from heaven in the clouds, in the glory of the Father, sending this man and those who follow him into the lake of fire; but bringing in for the righteous the times of the kingdom, that is, the rest, the hallowed seventh day.
Ibid., 5:33:2
And again He says, “Whosoever shall have left lands, or houses, or parents, or brethren, or children because of Me, he shall receive in this world an hundred-fold, and in that to come he shall inherit eternal life.” For what are the hundred-fold [rewards] in this word, the entertainments given to the poor, and the suppers for which a return is made? These are [to take place] in the times of the kingdom, that is, upon the seventh day, which has been sanctified, in which God rested from all the works which He created, which is the true Sabbath of the righteous, which they shall not be engaged in any earthly occupation; but shall have a table at hand prepared for them by God, supplying them with all sorts of dishes.
Clement of Alexandria, Exhortation to the Heathen 9
(circa 188-9)
For the Scripture somewhere says, “To-day, if ye will hear His voice, harden not your hearts, as in the provocation, in the day of temptation in the wilderness, when your fathers proved Me by trial.” And what was the trial? If you wish to learn, the Holy Spirit will show you: “And saw my works,” He says, “forty years. Wherefore I was grieved with that generation, and said, They do always err in heart, and have not known My ways. So I sware in my wrath, they shall not enter into My rest.” Look to the threatening! Look to the exhortation! Look to the punishment! Why, then, should we any longer change grace into wrath, and not receive the word with open ears, and entertain God as a guest in pure spirits? For great is the grace of His promise, “if to-day we hear His voice.” And that to-day is lengthened out day by day, while it is called to-day. And to the end the today and the instruction continue; and then the true to-day, the never-ending day of God, extends over eternity. Let us then ever obey the voice of the divine word. For the to-day signifies eternity.
Miscellanies 6:16
(circa 202-15)
And the fourth word is that which intimates that the world was created by God, and that He gave us the seventh day as a rest, on account of the trouble that there is in life. For God is incapable of weariness, and suffering, and want. But we who bear flesh need rest. The seventh day, therefore, is proclaimed a rest—abstraction from ills—preparing for the Primal Day, our true rest; which, in truth, is the first creation of light, in which all things are viewed and possessed. From this day the first wisdom and knowledge illuminate us. For the light of truth—a light true, casting no shadow, is the Spirit of God indivisibly divided to all, who are sanctified by faith, holding the place of a luminary, in order to the knowledge of real existences. By following Him, therefore, through our whole life, we become impossible; and this is to rest.
…
That, then, we may be taught that the world was originated, and not suppose that God made it in time, prophecy adds: “This is the book of the generation: also of the things in them, when they were created in the day that God made heaven and earth.” For the expression “when they were created” intimates an indefinite and dateless production. But the expression “in the day that God made,” that is, in and by which God made “all things,” and “without which not even one thing was made,” points out the activity exerted by the Son. As David says, “This is the day which the Lord hath made; let us be glad and rejoice in it;” that is, in consequence of the knowledge imparted by Him, let us celebrate the divine festival; for the Word that throws light on things hidden, and by whom each created thing came into life and being, is called day.
Origen, De Principiis 2:3:5
(circa 212-15)
But this world, which is itself called an age, is said to be the conclusion of many ages. Now the holy apostle teaches that in that age which preceded this, Christ did not suffer, nor even in the age which preceded that again; and I know not that I am able to enumerate the number of anterior ages in which He did not suffer. I will show, however, from what statements of Paul I have arrived at this understanding. He says, “But now once in the consummation of ages, He was manifested to take away sin by the sacrifice of Himself.” For He says that He was once made a victim, and in the consummation of ages was manifested to take away sin. Now that after this age, which is said to be formed for the consummation of other ages, there will he other ages again to follow, we have clearly learned from Paul himself, who says, “That in the ages to come He might show the exceeding riches of His grace in His kindness towards us.” He has not said, “in the age to come,” nor “in the two ages to come,” whence I infer that by his language many ages are indicated. Now if there is something greater than ages, so that among created beings certain ages may be understood, but among other beings which exceed and surpass visible creatures, (ages still greater) (which perhaps will be the case at the restitution of all things, when the whole universe will come to a perfect termination), perhaps that period in which the consummation of all things will take place is to be understood as something more than an age. But here the authority of holy Scripture moves me, which says, “For an age and more.” Now this word “more” undoubtedly means something greater than an age; and see if that expression of the Savior, “I will that where I am, these also may be with Me; and as I and Thou are one, these also may be one in Us,” may not seem to convey something more than an age and ages, perhaps even more than ages of ages,—that period, viz., when all things are now no longer in an age, but when God is in all.
Ibid., 4:1:16.
Now who is there, pray, possessed of understanding, that will regard the statement as appropriate, that the first day, and the second, and the third, in which also both evening and morning are mentioned, existed without sun, and moon, and stars—the first day even without a sky? And who is found so ignorant as to suppose that God, as if He had been a husbandman, planted trees in paradise, in Eden towards the east, and a tree of life in it, i.e., a visible and palpable tree of wood, so that any one eating of it with bodily teeth should obtain life, and, eating again of another tree, should come to the knowledge of good and evil? No one, I think, can doubt that the statement that God walked in the afternoon in paradise, and that Adam lay hid under a tree, is related figuratively in Scripture, that some mystical meaning may be indicated by it. The departure of Cain from the presence of the Lord will manifestly cause a careful reader to inquire what is the presence of God, and how any one can go out from it. But not to extend the task which we have before us beyond its due limits, it is very easy for any one who pleases to gather out of holy Scripture what is recorded indeed as having been done, but what nevertheless cannot be believed as having reasonably and appropriately occurred according to the historical account.
Origen, Against Celsus 6:50
(circa 248)
And since he makes the statements about the “days of creation” ground of accusation,—as if he understood them clearly and correctly, some of which elapsed before the creation of light and heaven, and sun, and moon, and stars, and some of them after the creation of these,—we shall only make this observation, that Moses must then have forgotten that he had said a little before, “that in six days the creation of the world had been finished,” and that in consequence of this act of forgetfulness he subjoins to these words the following: “This is the book of the creation of man, in the day when God made the heaven and the earth!” But it is not in the least credible, that after what he had said respecting, the six days, Moses should immediately add, without a special meaning, the words, “in the day that God made the heavens and the earth;” and if any one thinks that these words may be referred to the statement, “In the beginning God made the heaven and the earth,” let him observe that before the words, “Let there be light, and there was light,” and these, “God called the light day,” it has been stated that “in the beginning God made the heaven and the earth.”
Ibid., 6:60.
And with regard to the creation of the light upon the first day, and of the firmament upon the second, and of the gathering together of the waters that are under the heaven into their several reservoirs on the third (the earth thus causing to sprout forth those (fruits) which are under the control of nature alone, and of the (great) lights and stars upon the fourth, and of aquatic animals upon the fifth, and of land animals and man upon the sixth, we have treated to the best of our ability in our notes upon Genesis, as well as in the foregoing pages, when we found fault with those who, taking the words in their apparent signification, said that the time of six days was occupied in the creation of the world, and quoted the words: “These are the generations of the heavens and of the earth when they were created, in the day that the LORD God made the earth and the heavens.”
Ibid., 6:61.
Again, not understanding the meaning of the words, “And God ended on the sixth day His works which He had made, and ceased on the seventh day from all His works which He had made: and God blessed the seventh day, and hallowed it, because on it He had ceased from all His works which He had begun to make;” and imagining the expression, “He ceased on the seventh day,” to be the same as this, “He rested on the seventh day,” he makes the remark: “After this, indeed, he is weary, like a very bad workman, who stands in need of rest to refresh himself!” For he knows nothing of the day of the Sabbath and rest of God, which follows the completion of the world’s creation, and which lasts during the duration of the world, and in which all those will keep festival with God who have done all their works in their six days, and who, because they have omitted none of their duties, will ascend to the contemplation (of celestial things) and to the assembly of righteous and blessed beings.
Origen, Homilies on Genesis and Exodus 48
(circa 210-50)
The text said that “there was evening and there was morning,” it did not say: “the first day,” but said, “one day.” It is because there was not yet time before the world existed. But time begins to exist with the following days.
Victorinus of Pettau
On the Creation of the World (circa 270)
And in Matthew we read, that it is written Isaiah also and the rest of his colleagues broke the Sabbath—that that true and just Sabbath should be observed in the seventh millenary of years. Wherefore to those seven days the Lord attributed to each a thousand years; for thus went the warning: “In Thine eyes, O Lord, a thousand years are as one day.” Therefore in the eyes of the Lord each thousand of years is ordained, for I find that the Lord’s eyes are seven. Wherefore, as I have narrated, that true Sabbath will be in the seventh millenary of years, when Christ with His elect shall reign.