'End of the World' in the Bible

The enemy that sowed them is the devil: the harvest is the end of the world; the reapers are the angels.

So shall it be at the end of the world. The angels shall come forth and sever the wicked from among the just.

And as he sat on the mount of Olives, his disciples came to him privately, saying, Tell us, when shall these things be? And what shall be the sign of thy coming, and of the end of the world?

Teaching them to observe all things whatsoever I have commanded you; and lo I am with you always, even to the end of the world.

Ye adulterers and adultresses, know ye not, that the friendship of the world is enmity against God? Whosoever therefore desireth to be a friend of the world, is an enemy of God.