[BipolarBob]

——After they receive the Sacrament of Reconciliation/Penance.——

When and Where did our Lord require to do that to become a Christian?

Don't you remember reading in the Bible about going to the nearest CATHOLIC CHURCH and receiving that sacrament?

neither do I.

[Olog-hai]

I acknowledged my sin unto thee, and mine iniquity have I not hid. I said, I will confess my transgressions unto the Lᴏʀᴅ; and thou forgavest the iniquity of my sin. Selah.

— Psalm 32:5

If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

— 1 John 1:9

UIM, the phrase “sacrament of penance and reconciliation” is how the Catholic Church describes that particular part of doctrine.