Luke 1:74-75
to grant us without fear, being delivered from the hand of our enemies, to serve him
Romans 6:14
For sin shall not have a Lordship over you; for you are not under the law but under the grace.
Romans 6:17-18
But thanks be to God that you were servants of sin, but obeyed from the heart the form of teaching in which you were instructed,
Romans 6:22
But now having been made free from sin and made servants to God, you have your fruit in sanctification, and the end eternal life.
1 Corinthians 7:22-23
For the servant called in the Lord is the Lord's freeman; in like manner the called freeman is Christ's servant.
1 Corinthians 9:19
For being free from all men, I have made myself a servant of all, that I may gain more;
1 Corinthians 9:21
to those without law, as without law, being not without law to God, but with law to Christ, that I might gain those without law;
Galatians 5:13
For you are called to liberty, brothers, only make not your liberty an occasion for the flesh, but by love serve one another.