Dear Robert, I do understand that all Scripture is God-breathed. I’ve spent a decent amount of time studying the Scriptures (Oh, the horror, a Catholic who studies Scriptures, that must be the 7th sign!!!) and I love Paul’s writings. You would be absolutely amazed at how much of the Catholic Church’s doctrines are built around Paul’s writings. So I appreciate your efforts. I’ll deal with your next part next.
“Christians will not be judged by their sins” is one of the worst heresies the Protestant Reformation has brought about.
Jesus makes it clear, and St. Paul reaffirms it. If you wish your sins to be forgiven, you had better forgive your brothers. Jesus even gives the Apostles the power to forgive sins and the power to retain sins.
Please don’t wrap yourself in the “Assurance of Salvation” blanket and expect that to get you to heaven. It goes against Jesus and St. Paul’s teachings, and it goes against the entire history of the Church Jesus founded.