Deuteronomy 15:17

Then you shall take an awl, and thrust it through his ear unto the door, and he shall be your servant forever. And also unto your maidservant you shall do likewise.

Leviticus 25:39-42

And if your brother that dwells by you becomes poor, and is sold unto you; you shall not compel him to serve as a slave:

1 Samuel 1:22

But Hannah went not 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 appear before the LORD, and there abide forever.

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