Deuteronomy 16:14-20

14and thou shalt rejoice in thy feast, thou, and thy son, and thy daughter, and thy manservant, and thy maidservant, and the Levite, and the stranger, and the fatherless, and the widow, that are within thy gates.

15Seven days shalt thou keep a feast unto the LORD thy God in the place which the LORD shall choose: because the LORD thy God shall bless thee in all thine increase, and in all the work of thine hands, and thou shalt be altogether joyful.

16Three times in a year shall all thy males appear before the LORD thy God in the place which he shall choose; in the feast of unleavened bread, and in the feast of weeks, and in the feast of tabernacles: and they shall not appear before the LORD empty:

17every man shall give as he is able, according to the blessing of the LORD thy God which he hath given thee.

18Judges and officers shalt thou make thee in all thy gates, which the LORD thy God giveth thee, according to thy tribes: and they shall judge the people with righteous judgment.

19Thou shalt not wrest judgment; thou shalt not respect persons: neither shalt thou take a gift; for a gift doth blind the eyes of the wise, and pervert the words of the righteous.

20That which is altogether just shalt thou follow, that thou mayest live, and inherit the land which the LORD thy God giveth thee.