He commanded also the people that dwelt in Jerusalem, to give to the priests, and the Levites their portion, that they might attend to the law of the Lord.
Besides the males from three years old and upward: to all that went into the temple of the Lord, and whatsoever there was need of in the ministry, and their offices according to their courses, day by day.
And indeed they that are of the sons of Levi, who receive the priesthood, have a commandment to take tithes of the people according to the law, that is to say, of their brethren: though they themselves also came out of the loins of Abraham.
And the firstfruits of all the firstborn, and all the libations of all things that are offered, shall be the priest's: and you shall give the firstfruits of your meats to the priest, that he may return a blessing upon thy house.