Genesis 43:18
And the men were afraid, because they were brought into Joseph's house; and they said, Because of the money that was returned in our sacks at the first time are we brought in; that he may seek occasion against us, and fall on us, and take us for slaves, and our asses.
Torrey's Topical Textbook—AKJV

Leviticus 25:46
And you shall take them as an inheritance for your children after you, to inherit them for a possession; they shall be your slaves for ever: but over your brothers the children of Israel, you shall not rule one over another with rigor.
Torrey's Topical Textbook—AKJV