Luke 1:74-75
to give us, that we, secure from fear, rescued from the hands of our enemies, should serve him,
Romans 6:14
For sin shall not hold dominion over you: for ye are not under the law, but under grace.
Romans 6:17-18
But thanks be to God, that though ye were the servants of sin, ye have obeyed from the heart the model of doctrine into which ye were delivered.
Romans 6:22
But now being set at liberty from sin, and become servants to God, ye have your fruit unto holiness, and at the end life eternal.
1 Corinthians 7:22-23
For he that is called in the Lord, being a slave, is the Lord's freed man: in like manner also, he that is called, being a free man, is the servant of Christ.
1 Corinthians 9:19
For though I be free from all men, I have made myself the servant of all, that I might gain the more.
1 Corinthians 9:21
to those who are without law, as without law (not as being without law to God, but under the law to Christ), that I might gain those who were without law.
Galatians 5:13
For ye have been called unto liberty, brethren; only use not that liberty as a pretext for carnality, but in love be subject one to another.