1 John 1:10 in the King James Version
If we say that we have not sinned, we make him a liar, and his word is not in us.
Context
9 If we confess our sins, he is faithful and righteous to forgive us the sins and to cleanse us from all unrighteousness.
10 If we say that we haven’t sinned, we make him a liar, and his word is not in us.