Deuteronomy 16:8-10

Darby Translation

⁸ Six days thou shalt eat unleavened bread, and on the seventh day is a solemn assembly to Jehovah thy God; thou shalt do no work.

⁹ Seven weeks shalt thou count: from the beginning of putting the sickle into the corn shalt thou begin to count seven weeks.

¹⁰ And thou shalt hold the feast of weeks to Jehovah thy God with a tribute of a voluntary-offering of thy hand, which thou shalt give, according as Jehovah thy God hath blessed thee;