Exodus 34:22

“Three times a year you shall celebrate a feast to Me.

“Also you shall keep the Feast of the Harvest of the first fruits of your labors from what you sow in the field; also the Feast of the Ingathering at the end of the year when you gather in the fruit of your labors from the field.

‘As an offering of first fruits you shall bring them near to Yahweh, but they shall not ascend for a soothing aroma on the altar.

‘Also on the day of the first fruits, when you bring near a new grain offering to Yahweh in your Feast of Weeks, you shall have a holy convocation; you shall do no laborious work.

‘Now in the seventh month, on the first day of the month, you shall also have a holy convocation; you shall do no laborious work. It will be to you a day for blowing trumpets.

“You shall count seven weeks for yourself; you shall begin to count seven weeks from the time you begin to put the sickle to the standing grain.

and did so according to the daily rule, offering them up according to the commandment of Moses, for the sabbaths, the new moons and the three annual feasts—the Feast of Unleavened Bread, the Feast of Weeks and the Feast of Booths.