according to the daily duty to offer up as the commandment of Moses for Sabbaths, New Moons, and the three annual festivals: the Feast of Unleavened Bread, the Feast of Weeks, and the Feast of Tabernacles.
You shall observe the Feast of Harvest, the firstfruits of your labors, which you have sown in the field. You shall observe the Feast of Ingathering at the end of the year, when you have gathered in the fruit of your labors from the field.
You must keep the Feast of Weeks to the Lord your God with a tribute of a freewill offering from your hand, which you must give to the Lord your God, in proportion to how much the Lord your God has blessed you.
Three times a year all your males must appear before the Lord your God in the place where He will choose: at the Feast of Unleavened Bread, at the Feast of Weeks, and at the Feast of Tabernacles, and they must not appear before the Lord empty.