Leviticus 23:8, 12, 36
Leviticus 23:8 KJV
But ye shall offer an offering made by fire unto the LORD seven days: in the seventh day is an holy convocation: ye shall do no servile work therein.
Leviticus 23:12 KJV
And ye shall offer that day when ye wave the sheaf an he lamb without blemish of the first year for a burnt offering unto the LORD.