'End' in the Bible

Again, I give you a new law, which is true in him and in you; for the night is near its end and the true light is even now shining out.

And the world and its desires is coming to an end: but he who does God's pleasure is living for ever.

Children, it is the last hour [the end of this age]; and just as you heard that the antichrist is coming [the one who will oppose Christ and attempt to replace Him], even now many antichrists (false teachers) have appeared, which confirms our belief that it is the last hour.

He that practises sin is of the devil; for from the beginning the devil sins. To this end the Son of God has been manifested, that he might undo the works of the devil.