And his gifts were that some should be apostles, some prophets, some evangelists, some pastors and teachers, for the equipment of the saints, for the work of ministry, for building up the body of Christ, until we all attain to the unity of the faith and of the knowledge of the Son of God, to mature manhood, to the measure of the stature of the fulness of Christ; so that we may no longer be children, tossed to and fro and carried about with every wind of doctrine, by the cunning of men, by their craftiness in deceitful wiles. Rather, speaking the truth in love, we are to grow up in every way into him who is the head, into Christ, from whom the whole body, joined and knit together by every joint with which it is supplied, when each part is working properly, makes bodily growth and upbuilds itself in love.—Ephesians 4:11-16
So then, brethren, stand firm and hold to the traditions which you were taught by us, either by word of mouth or by letter (2 Thess. 2:15). Guard what has been entrusted to you. Avoid the godless chatter and contradictions of what is falsely called knowledge, for by professing it some have missed the mark as regards faith (1 Tim. 6:21-22).