When God saves us, He truly gives us a “New Birth.”
Whereas before, like in Romans 7 our sins control us, after He saves us, we have no more condemnation (Romans 8:1 - There is therefore no more condemnation to those who are in Christ Jesus) and gives us power over our sin (II Corinthians 5:17 Therefore if any man be in Christ, he is a new creature: old things are passed away; behold, all things are become new.)
Furthermore, it is not the action of sin that Jesus came to do away with, but the desire, the motivation of sin that LEADS to the sin. Otherwise, Jesus would not have said the following: Mathew 5:28 - But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.
Some Church of Christ folks and Pentecostals truly believe they no longer sin after being saved.
I’ve talked to many who truly believe that to be the case.
They are lying.
1 John 1:8-9