en_tn/2co/01/23.md

I call God to bear witness for me

The phrase "bear witness" refers to a person telling what they have seen or heard in order to settle an argument. "I ask God to show what I say is true"

stand in your faith

The word "stand" can refer to something that does not change. AT: "remain firm in your faith" (See: rc://en/ta/man/translate/figs-idiom)