'Feasts' in the Bible

Say to the children of Israel, These are the fixed feasts of the Lord, which you will keep for holy meetings: these are my feasts.

These are the fixed feasts of the Lord, the holy days of worship which you will keep at their regular times

These are the fixed feasts of the Lord, to be kept by you as holy days of worship, for making an offering by fire to the Lord; a burned offering, a meal offering, an offering of beasts, and drink offerings; every one on its special day;

And Moses made clear to the children of Israel the orders about the fixed feasts of the Lord.