Acts 8:23
for I see that you are in the gall of bitterness, and in the bond of iniquity."
Hebrews 12:15
looking carefully, lest there be any one falling short of the grace of God; lest any root of bitterness, springing up, trouble you, and through it many be defiled;
John 8:34
Jesus answered them, "Verily, verily, I say to you, every one who commits sin is a slave of sin.
Romans 6:17-22
But thanks be to God that, though ye were slaves of sin, ye did, however, obey from the heart that form of teaching unto which ye were delivered;
Titus 3:3
For we also were once foolish, disobedient, deceived, serving manifold desires and pleasures, living in malice and envy, hateful, and hating one another.
2 Peter 2:4
For, if God spared not angels that sinned, but, hurling them down to Hell, delivered them up to pits of darkness, kept for judgment;
2 Peter 2:19
promising them liberty, while they themselves are slaves of corruption; for by what one is overcome by this he has become enslaved.