Levítico 23

The Feast of Weeks

15 ‘You shall count from the day after the Sabbath, from the day when you brought in the sheaf (tied bundle of grain) of the wave offering; there shall be seven complete Sabbaths (seven full weeks).

22 ‘When you reap the harvest of your land, you shall not reap to the edges of your field, nor gather the gleaning of your harvest; you are to leave them for the poor and for the stranger. I am the Lord your God.’ "