Patristic

Didache 16:5

1 Watch over your life let your lamps be not quenched and your loins be not ungirded, but be ready, for ye know not the hour in which our Lord cometh. 2 But be frequently gathered together seeking the things which are profitable for your souls, for the whole time of your faith shall not profit you except ye be found perfect at the last time; 3 For in the last days the false prophets and the corruptors shall be multiplied, and the sheep shall be turned into wolves, and love shall change to hate; 4 For as lawlessness increaseth they shall hate one another and persecute and betray, and then shall appear the deceiver of the world as a Son of God, and shall do signs and wonders and the earth shall be given over into his hands and he shall commit iniquities which have never been since the world began. 5 Then shall the creation of mankind come to the fiery trial and many shall be offended and be lost, but they who endure in their faith shall be saved by the curse itself. 6 And then shall appear the signs of the truth. First the sign spread out in Heaven, then the sign of the sound of the trumpet, and thirdly the resurrection of the dead: 7 But not of all the dead, but as it was said, The Lord shall come and all his saints with him. 8 Then shall the world see the Lord coming on the clouds of Heaven.

Date: 50-70 C.E.
* Dates are based on scholarly estimates
Pseudepigrapha

4 Ezra 6:25

2 Esdras

18 And it said, Behold, the days come, that I will begin to draw nigh, and to visit them that dwell upon the earth, 19 And will begin to make inquisition of them, what they be that have hurt unjustly with their unrighteousness, and when the affliction of Sion shall be fulfilled; 20 and when the seal is placed upon the age which is about to pass away, then I will show these signs: the books shall be opened before the firmament, and all shall see it together: 21 And the children of a year old shall speak with their voices, the women with child shall bring forth untimely children of three or four months old, and they shall live, and be raised up. 22 And suddenly shall the sown places appear unsown, the full storehouses shall suddenly be found empty: 23 And the trumpet shall give a sound, which when every man heareth, they shall be suddenly afraid. 24 At that time shall friends fight one against another like enemies, and the earth shall stand in fear with those that dwell therein, the springs of the fountains shall stand still, and in three hours they shall not run. 25 Whosoever remaineth from all these that I have told thee shall escape, and see my salvation, and the end of your world.

Date: 70-100 C.E.
* Dates are based on scholarly estimates