Paul uses a rhetorical question to challenge what some people think about him and Barnabas. Alternate translation: "We have the right to bring a sister wife along with us, just like the rest of the apostles, the brothers of the Lord, and Cephas." (See: [[rc://en/ta/man/translate/figs-rquestion]])
# sister wife
"a wife who is a believer" or "a Christian wife." This in no way implies that any of the men has more than one wife.