Romans 6:20

For, when ye were slaves of sin, ye were free as to righteousness.

Romans 6:16-17

Know ye not that to whom ye present yourselves as slaves for obedience, his slaves ye are whom ye obey, whether of sin unto death, or obedience unto righteousness?

John 8:34

Jesus answered them, "Verily, verily, I say to you, every one who commits sin is a slave of sin.

Treasury of Scripture Knowledge

Summary

For when ye were the servants of sin, ye were free from righteousness.

The servants

General references

Bible References

The servants

Romans 6:16
Know ye not that to whom ye present yourselves as slaves for obedience, his slaves ye are whom ye obey, whether of sin unto death, or obedience unto righteousness?
John 8:34
Jesus answered them, "Verily, verily, I say to you, every one who commits sin is a slave of sin.

General references

Colossians 3:7
in which things ye also formerly walked, when ye were living in these things.