3:9 foolish questions. See also I Timothy 1:4; 4:7; 6:4,20; II Timothy 2:16,23; Titus 1:14. Paul gave repeated warnings about this matter in his three Pastoral Epistles. Maintaining sound doctrine in a local church is vitally important (e.g., I Timothy 4:13-16; II Timothy 1:13; 2:15; 4:2-4; Titus 1:9; 2:1,7-8), but trivial questions and arguments about extra-Biblical matters should be avoided.