Romans 6:17-18
But thanks be to God, that you who were once slaves of sin have become obedient from the heart to the standard of teaching to which you were committed,
Romans 6:22
But now that you have been set free from sin and have become slaves of God, the return you get is holiness and its end, eternal life.
1 Corinthians 6:9-11
Or do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived; neither the immoral, nor idolaters, nor adulterers, nor sexual perverts,
Ephesians 5:8-9
for once you were darkness, but now you are light in the Lord; walk as children of light
1 Peter 2:10-11
Once you were not a people, but now you are the people of God; once you had not received mercy, but now you have received mercy.