Romans 6:16
Do you not know that to whom you yield yourselves as slaves for obedience, you are slaves to him whom you obey; whether it is of sin to death, or of obedience to righteousness.
John 8:34
Jesus answered them, Truly, truly, I say to you, Whoever practices sin is the slave of sin.
2 Peter 2:19
promising them liberty, they themselves are the slaves of corruption. For by whom anyone has been overcome, even to this one he has been enslaved.
Matthew 6:24
No one can serve two masters. For either he will hate the one and love the other, or else he will hold to the one and despise the other. You cannot serve God and mammon.
Joshua 24:15
And if it seems evil to you to serve Jehovah, choose this day whom you will serve, whether the gods which your fathers served Beyond the River, or the gods of the Amorites in whose land you live. But as for me and my house, we will serve Jehovah.
Romans 6:12-13
Therefore do not let sin reign in your mortal body, that you should obey it in its lusts.
Romans 6:17
But thanks be to our God that you were the slaves of sin, but you have obeyed from the heart that form of doctrine to which you were delivered.
Romans 6:19-23
I speak in the manner of men because of the weakness of your flesh; for as you have yielded your members as slaves to uncleanness, and to lawless act unto lawless act, even so now yield your members as slaves to righteousness unto holiness.