Deuteronomy 15:12-18

12“1If your 2kinsman, a Hebrew man or woman, is sold to you, then he shall serve you six years, but in the seventh year you shall set him 3free. 13When you set him 4free, you shall not send him away empty-handed. 14You shall furnish him liberally from your flock and from your threshing floor and from your wine vat; you shall give to him as the Lord your God has blessed you. 15You shall remember that you were a slave in the land of Egypt, and the Lord your God redeemed you; therefore I command you 5this today. 16It shall come about 6if he says to you, ‘I will not go out from you,’ because he loves you and your household, since he fares well with you; 17then you shall take an awl and pierce it through his ear into the door, and he shall be your servant forever. Also you shall do likewise to your maidservant.

18“It shall not seem hard to you when you set him 7free, for he has given you six years with 8double the service of a hired man; so the Lord your God will bless you in whatever you do.