We are here on the seventh day of this feast in response to this command, as we find there in verse 8, to keep this day. But on its heels comes instruction about another feast, a separate feast. That is the Feast of Firstfruits, as it is called here, we often called it the wave sheaf offering. But on the day of the wave sheaf offering, or the Feast of Firstfruits, a sheaf of barley is waved before the Lord for acceptance. And this signals, as we saw there in verse 14, the beginning of the early grain harvest. They could not eat any of the other grain until this particular ceremony was completed. It marked the opening that on that day they could go out and harvest their early grain, mostly barley, and bring it in. So it is called the Feast of the Firstfruits. Those were usually the sheaf that was cut and offered and was the first ripe grain of the season and it was also, we could say, the whole harvest was the first harvest of the year. So it is the firstfruits of all their labor.
Now, it says this occurs the day after the Sabbath. The Sabbath is the seventh day of the week, the day after it would be the first day of the week, and so this wave sheaf offering was always to be made on a Sunday, the first day of the week. The only real clue we have as to which Sabbath this should be counted from, or which Sabbath should be the one after which we make the grain offering, is that this command appears immediately after the command to keep the Days of Unleavened Bread. And so it is only reasonable and logical to think that the Sabbath that God is mentioning here is the one that the people have just passed through, as it were, during the Days of Unleavened Bread.
This year the first Day of Unleavened Bread was a Sabbath and so that was the day, the Sabbath day, the weekly Sabbath that we should use as the start of this particular account. It is only one day, but it is on the day after the Sabbath during the Days of Unleavened Bread. So that meant that the Feast of Firstfruits for this year (2018) was last Sunday, which just happened to be the same day that the people of this world were keeping Easter Sunday. And as we see in verses 15 and 16, this particular day, the Feast of Firstfruits, is the first day of the count to Pentecost. So fifty days from that day, fifty days after the Sabbath, seven weeks then from that day, is the Feast of Pentecost.