Romans 6:16
Know ye not that to whom ye yield yourselves bondmen for obedience, ye are bondmen to him whom ye obey, whether of sin unto death, or of obedience unto righteousness?
John 8:34
Jesus answered them, Verily, verily, I say to you, Every one that practises sin is the bondman of sin.
2 Peter 2:19
promising them liberty, while they themselves are slaves of corruption; for by whom a man is subdued, by him is he also brought into slavery.
Matthew 6:24
No one can serve two masters; for either he will hate the one and will love the other, or he will hold to the one and despise the other. Ye cannot serve God and mammon.
Joshua 24:15
And if it seem evil unto you to serve Jehovah, choose you this day whom ye will serve; whether the gods whom your fathers that were on the other side of the river served, or the gods of the Amorite, in whose land ye dwell; but as for me and my house, we will serve Jehovah.
Romans 6:12-13
Let not sin therefore reign in your mortal body to obey its lusts.
Romans 6:17
But thanks be to God, that ye were bondmen of sin, but have obeyed from the heart the form of teaching into which ye were instructed.
Romans 6:19-23
I speak humanly on account of the weakness of your flesh. For even as ye have yielded your members in bondage to uncleanness and to lawlessness unto lawlessness, so now yield your members in bondage to righteousness unto holiness.