Deuteronomy 16:10-11

And thou shalt keep the feast of weeks unto the LORD thy God with a tribute of a freewill offering of thine hand, which thou shalt give {unto the LORD thy God}, according as the LORD thy God hath blessed thee: {a tribute: or, sufficiency} And thou shalt rejoice before the LORD thy God, thou, and thy son, and thy daughter, and thy manservant, and thy maidservant, and the Levite that {is} within thy gates, and the stranger, and the fatherless, and the widow, that {are} among you, in the place which the LORD thy God hath chosen to place his name there.