Leviticus
Leviticus 25:45
You may also buy from resident aliens who live among you and their families who are with you, whom they fathered in your land. They may become your property.
Isaiah 56:3-6
"Let no foreigner who has joined himself to the LORD say: "The LORD will surely exclude me from his people.' Furthermore, let no eunuch say, "Look! I am just a dry tree.'"
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