Repentance is central to spiritual life (Ac_20:21), but exactly what is repentance?
Repentance is God’s gift causing us to change our minds, to become convinced of truth (2Ti 2:25), or to be persuaded (Lk 16:30-31) such that our behavior changes from within. It’s different from confessing sin, admitting guilt, being sorry and trying to obey. (2Co 7:10) It’s a renewing in our heart, a new way of thinking, and only God can do it. (Ps 51:10, 19:13)
Repentance is what sets us free from the stranglehold of sin in our lives, delivering us from Satan’s power to hold us captive (2Ti 2:26), so we should immediately seek this gift whenever we find ourselves not acting, feeling, thinking or believing as we should (Is 55:6); any other response is loving our darkness instead of His light. (Jn 3:19) God never tells us to set aside time to repent … that’s like setting aside time to take antidotes; the longer we hold on to the poison of sin within us the more damage it does. Thinking any other way about repentance reveals we’re missing God in a big way.