Deuteronomy 15:17

then thou shalt take an aul and thrust it through his ear unto the door, and he shall be thy slave for ever. And also unto thy maidservant thou shalt do likewise.

Leviticus 25:39-42

And when thy brother becomes poor, being with thee, and if he should sell himself unto thee, thou shalt not compel him to serve as a slave.

1 Samuel 1:22

But Hannah did not go up, for she said unto her husband, I will not go up until the child is weaned, and then I will bring him that he may be presented before the LORD and abide there for ever.

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