Also on the day of the first fruits, when you bring a new grain offering unto the LORD, at your Feast of Weeks, you shall have a holy convocation; you shall do no regular work:
Read Chapter 28
George Leo Haydock
The day of Pentecost, seven weeks after the Passover, was the next in solemnity, to thank God for the wheat harvest, of which the first-fruits were now presented. (Haydock)
Two loaves, made with leaven, were given to the priests. (Lamy.) See Leviticus xxiii. 17.