Deuteronomy 15:17

then thou shall take an awl, and thrust it through his ear to the door, and he shall be thy servant forever. And also to thy maid-servant thou shall do likewise.

Leviticus 25:39-42

And if thy brother becomes poor with thee, and sells himself to thee, thou shall not make him to serve as a bondman.

1 Samuel 1:22

But Hannah did not go up, for she said to her husband, [Not] until the child be weaned, and then I will bring him, that he may appear before LORD, and abide there forever.

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