The doctrines and the line of conduct which I taught you –both what you heard and what you saw in me– hold fast to them; and God who gives peace will be with you.
But, by the authority of the Lord, we command you, brethren, to stand aloof from every brother whose life is disorderly and not in accordance with the teaching which all received from us.
Let no one think slightingly of you because you are a young man; but in speech, conduct, love, faith and purity, be an example for your fellow Christians to imitate.