en_tn/1ki/20/11.md

Tell Ben-Hadad, 'No one who is girding on his armor should boast as if he were taking it off.'

"Girding on armor" is metonymy for getting prepared for battle. "Tell Ben-Hadad, 'Do not boast as if you have already won a battle that you have not yet fought.'" (See: rc://en/ta/man/jit/figs-metonymy)

No one who is girding on his armor should boast as if he were taking it off

This is a proverb, so you may want to make it as brief and easy to say as possible. Alternate translation: "Let him who puts his armor on not boast like him who takes it off" (See: rc://en/ta/man/jit/writing-proverbs)