Deuteronomy 16:9
King James Version
“Seven weeks shalt thou number unto thee: begin to number the seven weeks from thou beginnest the sickle to the corn.”
Context
6But at the place which the LORD thy God shall choose to place his name in, there thou shalt sacrifice the passover at even, at the going down of the sun, at the season that thou camest forth out of Egypt.
7And thou shalt roast and eat in the place which the LORD thy God shall choose: and thou shalt turn in the morning, and go unto thy tents.
8Six days thou shalt eat unleavened bread: and on the seventh day a solemn assembly to the LORD thy God: thou shalt do no work
9Seven weeks shalt thou number unto thee: begin to number the seven weeks from thou beginnest the sickle to the corn.
10And thou shalt keep the feast of weeks unto the LORD thy God with a tribute of a freewill offering of thine hand, which thou shalt give according as the LORD thy God hath blessed thee:
11And thou shalt rejoice before the LORD thy God, thou, and thy son, and thy daughter, and thy manservant, and thy maidservant, and the Levite that within thy gates, and the stranger, and the fatherless, and the widow, that among you, in the place which the LORD thy God hath chosen to place his name there.
12And thou shalt remember that thou wast a bondman in Egypt: and thou shalt observe and do these statutes.