Deuteronomy 24:7-9

7A man might take hold of another Israelite and make him his slave. He might try to sell him as a slave. Anyone who does that must die. You must remove evil things from among you.

8If you have leprosy, be very careful! Do everything that the Levite priests tell you to do. You must obey everything that I have commanded them.

9Remember what the Lord your God did to Miriam after you left Egypt.