Thematic Bible: What preachers should do

Do you not know that those who perform sacred services eat the food of the temple, and those who attend regularly to the altar have their share from the altar? So also the Lord directed those who proclaim the gospel to get their living from the gospel.

My little children, I am writing these things to you so that you may not sin And if anyone sins, we have an Advocate with the Father, Jesus Christ the righteous; and He Himself is the propitiation for our sins; and not for ours only, but also for those of the whole world. By this we know that we have come to know Him, if we keep His commandments. read more.
The one who says, "I have come to know Him," and does not keep His commandments, is a liar, and the truth is not in him; but whoever keeps His word, in him the love of God has truly been perfected By this we know that we are in Him: the one who says he abides in Him ought himself to walk in the same manner as He walked.