Deuteronomy 16:16

12You shall remember that you were a slave in Egypt. You shall observe and do these statutes.

13You shall keep the feast of booths seven days, after you have gathered in from your threshing floor and from your wine press.

14You shall rejoice in your feast, you, your son, your daughter, your male servant, your female servant, the Levite, the foreigner, the fatherless, and the widow who are within your gates.

15You shall keep a feast to the LORD your God seven days in the place which the LORD chooses, because the LORD your God will bless you in all your increase and in all the work of your hands, and you shall be altogether joyful.

16Three times in a year all of your males shall appear before the LORD your God in the place which he chooses: in the feast of unleavened bread, in the feast of weeks, and in the feast of booths. They shall not appear before the LORD empty.

17Every man shall give as he is able, according to the LORD your God’s blessing which he has given you.

18You shall make judges and officers in all your gates, which the LORD your God gives you, according to your tribes; and they shall judge the people with righteous judgment.

19You shall not pervert justice. You shall not show partiality. You shall not take a bribe, for a bribe blinds the eyes of the wise and perverts the words of the righteous.

20You shall follow that which is altogether just, that you may live and inherit the land which the LORD your God gives you.