From
The Didache, chapter 16.
1 Watch concerning your life; let not your lamps be quenched or your loins be loosed, but be ye ready, for ye know not the hour at which our Lord cometh.
2 But be ye gathered together frequently, seeking what is suitable for your souls; for the whole time of your faith shall profit you not, unless ye be found perfect in the last time.
3 For in the last days false prophets and seducers shall be multiplied, and the sheep shall be turned into wolves, and love shall be turned into hate;
4 and because iniquity aboundeth they shall hate each other, and persecute each other, and deliver each other up; and then shall the Deceiver of the world appear as the Son of God, and shall do signs and wonders, and the earth shall be delivered into his hands; and he shall do unlawful things, such as have never happened since the beginning of the world.
5 Then shall the creation of man come to the fiery trial of proof, and many shall be offended and shall perish; but they who remain in their faith shall be saved by the rock of offence itself.
6 And then shall appear the signs of the truth; first the sign of the appearance in heaven, then the sign of the sound of the trumpet, and thirdly the resurrection of the dead
7 -- not of all, but as it has been said, The Lord shall come and all his saints with him;
8 then shall the world behold the Lord coming on the clouds of heaven.