Leviticus 7:36

Which the Lord commanded to be given them of the children
of Israel
Whenever they brought their offerings to be offered up by them, such parts thereof were ordered to be allowed them as theirs; in the day that he anointed them;
or from the day they were anointed of Moses, by the direction of the Lord, from that time they had a right and claim to the above things, out of the sacrifices brought, so Aben Ezra: and this was by a statute for ever throughout their generations;
in all successive generations, unto the coming of the Messiah, which would put an end to their priesthood. Thus the Lord provided for the maintenance of his ministers, till that time came; and since it has been the ordinance of Christ, that they which preach the Gospel should live of the Gospel, ( 1 Corinthians 9:13 1 Corinthians 9:14 ) .