When one confesses their sinful activities before the representative of God, Lord Jesus Christ, or God or Kṛṣṇa, their sinful activities are finished. But that does not mean that they shall go on again with commit sinful activities.And at the end of the week go to temple or church for atonement.One should be very conscious of them.
Therefore Caitanya Mahāprabhu accepted Jagāi-Mādhāi on one condition that, “From this day no more sinful activities. You accept this, then I accept you.” They promised, “Yes. Whatever we have done, no more.” That should be the right way of Confession.
God can excuse any amount of sinful activity. He has no difficulty to excuse us, but after confessing if I again commit sinful activities,that is the greatest sin.
One should be ashamed ,”God has excused me. Again I am sinful? I am so shameless.” But this business is going on in the name of god.
So we should not think that because we are chanting we can go on with all kinds of sinful activities. No. The chanting of Hare Kṛṣṇa will give you protection, but you should not take advantage of. But if by accident or by unintentionally if we commit some sins by previous habits, that is excused. That is accidental. Not that willfully sinful activities are done and it should be neutralized by chanting HareKṛṣṇa mantra. No. Then we are spoiling your time. That should not be done. So without being freed from sinful activities nobody can take to Kṛṣṇa consciousness. The method is easy. We can get out of sinful activities. But should not commit again. It is like one thinking that “I shall ignite fire and pour water again,” then what is the use of it ? Simply waste of time.
Ref >> Srila Prabhupada Vani.