Exodus 23:14-16

LITV(i) 14 Three times in the year you shall make a feast to Me. 15 You shall keep the Feast of Unleavened Bread . Seven days you shall eat unleavened bread, as I have commanded you, at the set time of the month of Abib. For in it you came out from Egypt, and they shall not appear before Me empty. 16 Also the Feast of Harvest, the first fruits of your labor, of what you sow in the field. Also the Feast of Ingathering, at the end of the year, at your gathering your work from the field.