9:15 chosen instrument . . . before the Gentiles and kings and the children of Israel. Paul considered himself to be an apostle to the Gentiles (Rom. 1:13, 14) as Peter was to the Jews (Gal. 2:8), but Paul also preached many times to the Jews, particularly in their synagogues (v. 20; Rom. 1:16; 1 Cor. 9:20).