Romans 6:20

New King James Version

For when you were slaves of sin, you were free in regard to righteousness.

Cross References

Matthew 6:24

“No one can serve two masters; for either he will hate the one and love the other, or else he will be loyal to the one and despise the other. You cannot serve God and mammon.

John 8:34

Jesus answered them, “Most assuredly, I say to you, whoever commits sin is a slave of sin.