Leviticus 23:14-16

Young's Literal Translation

¹⁴ `And bread and roasted corn and full ears ye do not eat until this self-same day, until your bringing in the offering of your God -- a statute age-during to your generations, in all your dwellings.

¹⁵ `And ye have numbered to you from the morrow of the sabbath, from the day of your bringing in the sheaf of the wave-offering: they are seven perfect sabbaths;

¹⁶ unto the morrow of the seventh sabbath ye do number fifty days, and ye have brought near a new present to Jehovah;