en_tn/2co/08/23.md

he is my partner and fellow worker for you

"he is my partner, who works with me to help you"

As for our brothers

This refers to the two other men who will accompany Titus.

they are messengers from the churches

This can be stated in active form. Alternate translation: "the churches have sent them as their messengers" (See: rc://en/ta/man/jit/figs-activepassive)

They are a glory to Christ

This can be stated with a verbal phrase. Alternate translation: "They will cause people to see Christ's glory" or "They will cause people to honor Christ" (See: rc://en/ta/man/jit/figs-abstractnouns)