Lev 23: 9 Then the LORD spoke to Moses, saying, 10 “Speak to the sons of Israel and say to them, ‘When you enter the land which I am going to give to you and reap its harvest, then you shall bring in the sheaf (omer) of the first fruits* of your harvest to the priest. 11 He shall wave the sheaf (omer) before the LORD for you to be accepted; on the day after the sabbath the priest shall wave it.
14 Until this same day, until you have brought in the offering of your God, you shall eat neither bread nor roasted grain nor new growth. It is to be a perpetual statute throughout your generations in all your dwelling places.
15 ‘You shall also count for yourselves from the day after the sabbath, from the day when you brought in the sheaf (omer) of the wave offering; there shall be seven complete sabbaths. 16 You shall count fifty days to the day after the seventh Sabbath+; then you shall present a new grain offering to the LORD. 17 You shall bring in from your dwelling places two loaves of bread for a wave offering, made of two-tenths of an ephah; they shall be of a fine flour, baked with leaven as first fruits* to the LORD.
* This is why both Wave Sheaf Day and Pentecost can be called Firstfruits.
+ Some use verse 15 to say the Wave Sheaf Day is the second day of Unleavened Bread, the day after the holyday Sabbath, the First Day of Unleavened Bread. But verse 16 says the count ends the day after the Sabbath. Verse 16 has to mean the weekly Sabbath, so the count has to start the day after the weekly Sabbath during Unleavened Bread.
|An omer of barley|
Historically, the omer referred to in Lev 23 meant a measure of grain, specifically barley flour. Here’s what Alfred Edersheim wrote in his book The Temple - Its Ministry and Service .
This Passover-sheaf was reaped in public the evening before it was offered, … The corn (barley) thus prepared was ground in a barley-mill, which left the hulls whole. … Though one ephah, or ten omers, of barley was cut down, only one omer of flour, or about 5.1 pints of our measure, was offered in the Temple. The omer of flour was mixed with a "log", or very nearly three-fourths of a pint of oil, and a handful of frankincense put upon it, then waved before the Lord.
Edersheim references Antiquities of the Jews  by Flavius Josephus who lived approx 37-100 AD as the source of this info. So you could say they harvested ten omers of grain from the field to present one omer of flour in the Temple. Why is the use of the word omer important in Lev 23? Because omer connects the Wave Sheaf offering, Pentecost offering, AND the gathering of manna. Let’s see how. You may have noticed that the word omer is NOT used in Lev 23 describing the Pentecost ceremony, Lev 23:17 "You shall bring in from your dwelling places two loaves of bread for a wave offering, made of two-tenths of an ephah”. Two loaves, two tenths of an ephah. That is two omers. The Pentecost offering is double the Wave Sheaf offering. Two omers used for two loaves. And let’s read what happened when the Israelites first received manna.
And on the sixth day?
Ex 16 22 Now on the sixth day they gathered twice as much bread, two omers for each one. When all the leaders of the congregation came and told Moses, 23 then he said to them, “This is what the LORD meant: Tomorrow is a sabbath observance, a holy sabbath to the LORD."
In other words, God revealed the Sabbath by doubling the manna collected on the sixth day.
· The Wave Sheaf Day, Pentecost, and manna are connected to one another.
· Wave Sheaf Day and Pentecost are both called Firstfruits.
· The count to Pentecost starts on Wave Sheaf Day
· One omer for Wave Sheaf Offering, two omers for Pentecost offering
· One omer of manna daily, two omers on the sixth day to reveal the Sabbath
· Double omer signifies the importance of the Sabbath and Pentecost
· Christ is the Early Firstfruits, we are the Latter Firstfruits
. Together we will do an even greater work
That greater work lies ahead, soon.