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If any man among you seemeth to be wise in this world, let him become a fool. 3:18
Trivia: According to 1 Corinthians 11:3, who is the head of every woman?
Paul says that the other apostles traveled with their wives - including Peter. We know from Mark 1:30 that Peter had a wife, since Jesus cured his mother-in-law. Paul confirms Peter's marital status here.