Deuteronomy 16:16-17
Deuteronomy 16:16-17 NIV
Three times a year all your men must appear before the LORD your God at the place he will choose: at the Festival of Unleavened Bread, the Festival of Weeks and the Festival of Tabernacles. No one should appear before the LORD empty-handed: Each of you must bring a gift in proportion to the way the LORD your God has blessed you.