Deuteronomy 16:9-10

New American Standard Bible

⁹ “^(A)You shall count seven weeks for yourself; you shall begin to count seven weeks from the time you begin to put the sickle to the standing grain. ¹⁰ Then you shall ^[a]celebrate the Feast of Weeks to the Lord your God with a ^[b]voluntary offering of your hand in a proportional amount, which you shall give just as the Lord your God blesses you;