“If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness. If we say we have not sinned, we make him a liar, and his word is not in us.” 1 John 1:9-10
A person may have heard and assented to the gospel message, but until it brings him to acknowledge his sin, it has not taken root.
(ESV study notes)
Raider’s of the Lost Ark had a great quote in it… “The penitent man shall pass.”
The book of 1 John in the New Testament is a go-to resource for a summary of characteristics of genuine conversion to Christ and the new birth. Check it out!