Paul refers to Barnabas three times in the second chapter of Galatians (2:1, 9, 13) but does not mention him in the brief account of the apostle’s initial contact with the Galatians in 4:12–15. If Barnabas had been with Paul at the founding of the Galatian churches, which is a necessary assumption of the “South Galatia” hypothesis (Acts 13–14), Barnabas would have been the senior partner (Acts 14:14: “the apostles Barnabas and Paul,” in that order). Paul would then surely have mentioned him (Koch
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