15 You too should be on your guard against him, because he strongly opposed our message.

15 Beware of him yourself, for he strongly opposed our message.

15 Of whom be thou ware also; for he hath greatly withstood our words.

15 Be careful of him, for he fought against everything we said.

15 You also must beware of him, for he has greatly resisted our words.

15 You also should be careful that he does not hurt you, because he fought strongly against our teaching.

15 of whom do thou also beware; for he greatly withstood our words.

15 Watch out for him. He violently opposed what we said.

15 Watch out for him yourself because he strongly opposed our words.

15 You also must beware of him, for he strongly opposed our message.

15 against whom you also be on guard, because he vehemently opposed our words.

15 You too should watch out for him. He strongly opposed our message.

15 Be on guard against him yourself, for he vigorously opposed our teaching.