[Iscool]

A non-Catholic CAN go in and talk with the priest, but the full benefits of the Sacrament will not be available to him. I’ve known several non-Catholics at retreats who have gone in and talked with the priest during the Confession time. (Usually on Saturday night.)

What's a non Catholic required to do to receive the full benefit of full forgiveness of God???

[St_Thomas_Aquinas]

-— What’s a non Catholic required to do to receive the full benefit of full forgiveness of God??? -—

If the person does not believe that the Catholic Church is the church that Christ founded, they must “repent and believe.”

But they won’t have the psychological certainty of God’s forgiveness that Catholics receive in Confession, nor the graces that the sacrament imparts.

You can always look in the Catechism...