He commanded the people who lived in Jerusalem to give the portion due to the priests and the Levites, so that they might devote themselves to the law of the Lord.
except those enrolled by genealogy, males from three years old and up, all who entered the house of the Lord as the duty of each day required, for their service according to their offices, by their divisions.
The first of all the first fruits of all kinds and every offering of all kinds from all your offerings shall belong to the priests; you shall also give to the priests the first of your dough, in order that a blessing may rest on your house.
And those descendants of Levi who receive the priestly office have a commandment in the law to collect tithes from the people, that is, from their kindred, though these also are descended from Abraham.