Numbers 31:41

And the LORD spake unto Aaron, Behold, I also have given thee the charge of mine heave offerings of all the hallowed things of the children of Israel; unto thee have I given them by reason of the anointing, and to thy sons, by an ordinance for ever.

Take it of their half, and give it unto Eleazar the priest, for an heave offering of the LORD. And of the children of Israel's half, thou shalt take one portion of fifty, of the persons, of the beeves, of the asses, and of the flocks, of all manner of beasts, and give them unto the Levites, which keep the charge of the tabernacle of the LORD. And Moses and Eleazar the priest did as the LORD commanded Moses.

Nor scrip for your journey, neither two coats, neither shoes, nor yet staves: for the workman is worthy of his meat.

Or saith he it altogether for our sakes? For our sakes, no doubt, this is written: that he that ploweth should plow in hope; and that he that thresheth in hope should be partaker of his hope. If we have sown unto you spiritual things, is it a great thing if we shall reap your carnal things? If others be partakers of this power over you, are not we rather? Nevertheless we have not used this power; but suffer all things, lest we should hinder the gospel of Christ. Do ye not know that they which minister about holy things live of the things of the temple? and they which wait at the altar are partakers with the altar? Even so hath the Lord ordained that they which preach the gospel should live of the gospel.

Let him that is taught in the word communicate unto him that teacheth in all good things.

Let the elders that rule well be counted worthy of double honour, especially they who labour in the word and doctrine.