The children of Israel were commanded to bring a sheaf of the first fruits of their harvest to the priest, to be held until the first day of the week. The priest would then wave the sheaf before the Lord so that he would accept them and bless them, which enabled them to officially begin their harvest. Exactly 50 days after, on the Feast of Harvest, each family would bake 2 loaves of leavened bread with the flour of the first fruits and bring them to the priests to be offered and waved before the Lord
