Deuteronomy 18:4-5

The apostle Paul gives the best comment upon this passage, and indeed the subject in general: He that waiteth at the altar should be partaker of the altar. 1 Corinthians 9:1. I would only observe upon it, that as the LORD himself hath undertaken by this precept to provide for his servants, bad must be the mind that refuseth to comply: and, on the other hand, most unworthy must be that servant, who takes advantage of this, to exact from his brethren more than what is just and right.