“Three times a year all your males shall appear before the Lord your God at the place that he will choose: at the Feast of Unleavened Bread, at the Feast of Weeks, and at the Feast of Booths. They shall not appear before the Lord empty-handed. Every man shall give as he is able, according to the blessing of the Lord your God that he has given you. -Deuteronomy 16:16-17