Deuteronomy 16:9
You are to count off seven weeks from the time you first put the sickle to the standing grain.
Berean Standard Bible
Seven weeks shalt thou number unto thee: begin to number the seven weeks from such time as thou beginnest to put the sickle to the corn.
You shall count for yourselves seven weeks. From the time you begin to put the sickle to the standing grain you shall begin to count seven weeks.