Then cometh the end, when he shall have delivered up the kingdom to God, even the Father; when he shall have put down all rule and all authority and power.

Then the end will come, when He hands over the kingdom to God the Father after He has destroyed all dominion, authority, and power.

For he must reign, till he hath put all enemies under his feet.

For He must reign until He has put all His enemies under His feet.

The last enemy that shall be destroyed is death.

The last enemy to be destroyed is death.