en_tn/1co/16/21.md

I, Paul, write this with my own hand

Paul was making it clear that the instructions in this letter are from him, even though one of his co-laborers wrote what Paul was saying in the rest of the letter. Paul wrote this last part with his own hand.

may he be accursed

"may God curse him." See how "accursed" was translated in 1 Corinthians 12:3.