Leviticus 23:15-16

Douay-Rheims 1899 American Edition

¹⁵ You shall count therefore from the morrow after the sabbath, wherein you offered the sheaf of the firstfruits, seven full weeks.

¹⁶ Even unto the marrow after the seventh week be expired, that is to say, fifty days, and so you shall offer a new sacrifice to the Lord.