Paul tells Christians at Rome that indulging in sin leads to slavery to it:

What then? Shall we sin because we are not under law but under grace? By no means! Don't you know that when you offer yourselves to someone to obey him as slaves, you are slaves to the one whom you obey—whether you are slaves to sin, which leads to death, or to obedience, which leads to righteousness? But thanks be to God that, though you used to be slaves to sin, you wholeheartedly obeyed the form of teaching to which you were entrusted.             ~ Romans 6:15-17

Thanks be to God, indeed – for the grace that breaks the chains of sin, and gives us freedom in Christ through obedience to him.