Leviticus 23:15
And ye counted to you from the morrow of the Sabbath from the day ye brought the handful of lifting up; seven Sabbaths shall be complete.
Exodus 34:22
And the festival of seven thou shalt make to thee, the first fruits of the harvest of wheat, and the festival of collection of the circuit of the year.
Leviticus 23:10-11
Speak to the sons of Israel, and say to them, When ye shall come into the land which I give to you, and ye reaped its harvest, and brought a handful of the first-fruits of your harvest to the priest:
Leviticus 25:8
And number to thee seven Sabbaths of years, seven years, seven times; and they shall be to thee the days of seven Sabbaths of years, nine and forty years.
Deuteronomy 16:9-10
Seven weeks shalt thou number to thee: from the beginning of the sickle upon the standing grain, thou shalt begin to number seven weeks.
Numbers 28:26
And in the day of the first-fruits, in your bringing near a new gift to Jehovah, in your sevens, a holy calling shall be to you; all work of service ye shall not do.