Leviticus 23:13-15

Revised Standard Version Catholic Edition

¹³ And the cereal offering with it shall be two tenths of an ephah of fine flour mixed with oil, to be offered by fire to the Lord, a pleasing odor; and the drink offering with it shall be of wine, a fourth of a hin. ¹⁴ And you shall eat neither bread nor grain parched or fresh until this same day, until you have brought the offering of your God: it is a statute for ever throughout your generations in all your dwellings.

The Festival of Weeks

¹⁵ “And you shall count from the morrow after the sabbath, from the day that you brought the sheaf of the wave offering; seven full weeks shall they be,