It's a bit off topic but all of Paul's letters overflow with the message of grace. God's grace toward Gentiles is the revelation he had from the Lord as distinct from the law as understood by the other apostles.
This was the bone of contention he had with Peter at Antioch which he took to Jerusalem for the whole church to decide upon. The church endorsed Paul's grace message and James wrote a letter confirming the decision Acts 15.....
No different than to any of us. I expected a special imputation as your thought....and didn't see one.