Thematic Bible: What preachers should do

Do you not know that those who perform service in the Temple [are permitted to] eat food from the Temple? And those who serve at the Altar receive a share of what is sacrificed on the Altar? Even so the Lord directed that those who proclaim the good news [about Christ] should get their living from [preaching] that good news.

My little children [i.e., dear ones], I am writing this to you so that you will not sin anymore. But if anyone does sin, we have Someone to go to the Father on our behalf; it is Jesus Christ, the [only] righteous One. And He is the One who provides a "covering over" [or atonement] for our sins [See Heb. 2:17; Dan. 9:24; II Chron. 29:24], and not for ours [who are already Christians] only, but also for the sins of the people of the whole world. And here is how we can be assured that we know Jesus [i.e., that we are saved]: [It is] by obeying what He commands us. read more.
The person who says, "I have come to know Him," but does not obey what He commands, is lying [by such a profession], and the truth [about the matter] is not in his heart. But the person who obeys what His teaching requires, truly in this person love for God has been made complete. This is [another way] to be sure that we are in [fellowship with] Him: The person who claims he is continuing to live in [fellowship with] Jesus should also live the way He did.