Hebrew Bible

Psalm 90:4

2 Even before the mountains came into existence, or you brought the world into being, you were the eternal God. 3 You make mankind return to the dust, and say, “Return, O people.” 4 Yes, in your eyes a thousand years are like yesterday that quickly passes, or like one of the divisions of the nighttime. 5 You bring their lives to an end and they “fall asleep.” In the morning they are like the grass that sprouts up: 6 In the morning it glistens and sprouts up; at evening time it withers and dries up.

Date: 6th-3rd Centuries B.C.E.
* Dates are based on scholarly estimates
New Testament

2 Peter 3:8

6 Through these things the world existing at that time was destroyed when it was deluged with water. 7 But by the same word the present heavens and earth have been reserved for fire, by being kept for the day of judgment and destruction of the ungodly. 8 Now, dear friends, do not let this one thing escape your notice, that a single day is like a thousand years with the Lord and a thousand years are like a single day. 9 The Lord is not slow concerning his promise, as some regard slowness, but is being patient toward you because he does not wish for any to perish but for all to come to repentance. 10 But the day of the Lord will come like a thief; when it comes, the heavens will disappear with a horrific noise, and the celestial bodies will melt away in a blaze, and the earth and every deed done on it will be laid bare.

Date: 120-130 C.E.
* Dates are based on scholarly estimates