1 Corinthians 15:25 in the King James Version
For he must reign, till he hath put all enemies under his feet.
Context
24 Then the end comes, when he will deliver up the Kingdom to God the Father, when he will have abolished all rule and all authority and power.
25 For he must reign until he has put all his enemies under his feet.
26 The last enemy that will be abolished is death.