Deuteronomy 16:9-10
Deuteronomy 16:9-10 NKJV
“You shall count seven weeks for yourself; begin to count the seven weeks from the time you begin to put the sickle to the grain. Then you shall keep the Feast of Weeks to the LORD your God with the tribute of a freewill offering from your hand, which you shall give as the LORD your God blesses you.