Leviticus 23:10-15
23:10 “Speak to the Israelites and tell them, ‘When you enter the land that I am about to give to you and you gather in its harvest,
then you must bring the sheaf of the first portion of your harvest
to the priest,
23:11 and he must wave the sheaf before the
Lord to be accepted for your benefit
– on the day after the Sabbath the priest is to wave it.
23:12 On the day you wave the sheaf you must also offer
a flawless yearling lamb
for a burnt offering to the
Lord,
23:13 along with its grain offering, two tenths of an ephah of
choice wheat flour
mixed with olive oil, as a gift to the
Lord, a soothing aroma,
and its drink offering, one fourth of a hin of wine.
23:14 You must not eat bread, roasted grain, or fresh grain until this very day,
until you bring the offering of your God. This is a perpetual statute throughout your generations
in all the places where you live.
The Festival of Weeks
23:15 “‘You must count for yourselves seven weeks from the day after the Sabbath, from the day you bring the wave offering sheaf; they must be complete weeks.