2 Peter 3:8

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. …

“For Isaiah spake thus concerning this space of a thousand years: ‘For there shall be the new heaven and the new earth, and the former shall not be remembered, or come into their heart; but they shall find joy and gladness in it, which things I create. For, Behold, I make Jerusalem a rejoicing, and My people a joy; and I shall rejoice over Jerusalem, and be glad over My people. And the voice of weeping shall be no more heard in her, or the voice of crying. And there shall be no more there a person of immature years, or an old man who shall not fulfil his days. For the young man shall be an hundred years old; but the sinner who dies an hundred years old, he shall be accursed. And they shall build houses, and shall themselves inhabit them; and they shall plant vines, and shall themselves eat the produce of them, and drink the wine. …

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. …

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.

So, then, brethren, having received no small occasion to repent, while we have opportunity, let us turn to God who called us, while yet we have One to receive us. For if we renounce these indulgences and conquer the soul by not fulfilling its wicked desires, we shall be partakers of the mercy of Jesus. Know ye that the day of judgment draweth nigh like a burning oven, and certain of the heavens and all the earth will melt, like lead melting in fire; and then will appear the hidden and manifest deeds of men. Good, then, is alms as repentance from sin; better is fasting than prayer, and alms than both; “charity covereth a multitude of sins,” and prayer out of a good conscience delivereth from death. Blessed is every one that shall be found complete in these; for alms lightens the burden of sin.

The evangelist John has spoken of these two resurrections in the book which is called the Apocalypse, but in such a way that some Christians do not understand the first of the two, and so construe the passage into ridiculous fancies. For the Apostle John says in the foresaid book, “And I saw an angel come down from heaven. . . . Blessed and holy is he that hath part in the first resurrection: on such the second death hath no power; but they shall be priests of God and of Christ, and shall reign with Him a thousand years.” Those who, on the strength of this passage, have suspected that the first resurrection is future and bodily, have been moved, among other things, specially by the number of a thousand years, as if it were a fit thing that the saints should thus enjoy a kind of Sabbath-rest during that period, a holy leisure after the labors of the six thousand years since man was create …