Thematic Bible: What preachers should do

don't you know, that they who prepare the sacrifices, do eat of the sacrifice in the temple? and they who wait at the altar, have their portion from the altar? even so has the Lord ordained, that they who preach the gospel, should live by the gospel.

My dear children, these things I write unto you, that ye may avoid sin. but if any man has failed, we have an advocate with the father, Jesus Christ the just. he is the the victim that has expiated our sins: and not ours only, but likewise the sins of the whole world. if we keep his commandments, that is a proof that we know him. read more.
he that says, he knows him, and does not keep his commandments, is a lyar, and an enemy to the truth: but he that observes his precepts, loves God with a true and perfect love: 'tis by this we know that we are truly christians. he that says he is attach'd to Christ, ought to regulate his conduct by his example.