If we are in Christ, we are a new creature - 2 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.
We are apt to think that when someone is saved, old habits, evil thoughts, and lustful looks are forever done away and everything becomes literally new in a person’s life. This verse does not describe a believer’s practice but rather their position. In Christ, old things have passed away and all things have become new. One day, when Jesus returns for us, the two will be in perfect agreement.