Leviticus 23:11

He shall wave the sheaf Or omer, rather. In the name of the whole congregation, it was lifted up toward heaven, as an acknowledgment to God for his goodness, and with prayer for his blessing upon all their ensuing harvest, which it, as it were, sanctified to them, and of which it gave them a comfortable use. For then we may eat our bread with joy, when God hath accepted our works. And thus should we always begin with God; begin our lives with him, begin every day with him, begin every work and business with him: Seek ye first the kingdom of God Reader, dost thou do this? The morrow after the sabbath After the first day of the feast of unleavened bread, which was a sabbath, or day of rest, as appears from Leviticus 23:7; or upon the sixteenth day of the month. And this was the first of those fifty days, in the close whereof was the feast of pentecost.