Deuteronomy 23:14-16

New Century Version

¹⁴ The Lord your God moves around through your camp to protect you and to defeat your enemies for you, so the camp must be holy. He must not see anything unclean among you so that he will not leave you.

Other Laws

¹⁵ If an escaped slave comes to you, do not hand over the slave to his master. ¹⁶ Let the slave live with you anywhere he likes, in any town he chooses. Do not mistreat him.