TRUE INTERNAL CHANGE IS NOT CALLED GOOD BEHAVIOR

Ac 3:19-20

19 So repent (change your mind and purpose); turn around and return [to God], that your sins may be erased (blotted out, wiped clean), that times of refreshing (of recovering from the effects of heat, of reviving with fresh air) may come from the presence of the Lord;

20 And that He may send [to you] the Christ (the Messiah), Who before was designated and appointed for you — even Jesus,
AMP