Leviticus 22:11

But if the priest buy [any] soul with his money, he shall eat of it,.... Whether any of his own nation, who sometimes, when become poor, were obliged to sell themselves; or a stranger, as the Targum of Jonathan; one of another nation, a Canaanitish servant, as Jarchi. Now these being his own purchase, and always to abide with him, became part of his family, and so might eat of the provisions of it; and it is from hence the Jews gather, as Jarchi and Gersom, that his wife might eat of the holy things, because bought with his money; but there is a better reason to be given for that, for of whatever family she was before, whether of the priests or not, by marriage she became a part, yea, a principal of his family, being one flesh with him, bearing the same name, and entitled to all the privileges of his house. This is extended by some Jewish writers l to cattle, for by any soul they understood also the soul of a beast, which being bought by the priest's money, might eat of the offerings of the tithes:

and he that is born in his house; they shall eat of his meat; whether male or female, as Aben Ezra; these are children of handmaids, as Jarchi, that were bought with his money; and these children being born of them, became his property, and part of his family, and so had a right to the provisions of his house. All this may teach us, that the holy ordinances of the Gospel are not to be administered to strangers, persons destitute of the grace of God, nor to such as are not of the family or church of God, but to such as are bought and redeemed with the blood of Christ, the high priest, and are born again of his Spirit and grace.

l Misn. Trumot, c. 11. sect. 9. Maimon. Bartenora in ib. Hilchot Trumot, c. 6. sect. 1.