Go to Leviticus 25:8-12. This is a bit about the year of Jubilee. We will see that the blowing of the trumpets had another idea behind it, not just the announcing the plagues of God's judgment on Jericho, and the people, but it was also announcing the jubilee.
Here, we are getting into a bunch of sevens again.
It says that the Jubilee is a holy year of liberty, and that is exactly what God was doing here in destroying Jericho. He was proclaiming liberty, not for the people of Jericho, but for His own people. He was going to make them free to inherit the land. That is one big part of the jubilee year - everyone goes back to his inheritance. No matter what had happened in the intervening time, you get back what is yours by right, or reward in this case.
That is the same thing that happens in the Millennium. The inheritance goes to those to whom it has been given - the people of God.
The same thing is happening by the fall of Jericho as will happen in the Millennium. The Jubilee is a type of the Millennium, which is begun by the fulfillment of the day of Trumpets.
We saw in Revelation 11 that the last trumpet announces the coming of Christ. This is also in Matthew 24:30-31 and I Thessalonians 4:16.
This pattern of seven sevens shows up again in the counting of the Jubilee:
These verses show that the Jubilee and the Feast of Weeks use the same procedure to arrive at their respective endpoints. With the Jubilee, there is a span of years that indicates perfect perfection, and then the next year is a blessing for the entire nation. It was a national reset of debts and land ownership, as well as a land sabbath—the second in a row when the nation would be able to eat from the land without having to sow. It was a year of liberty and providence that came after a perfect span of appointed years.
The Feast of Weeks, then, is like a mini-Jubilee. Both are dependent on seven sevens, whether literal Sabbaths or Sabbaths of years. And in both cases, the cycles of seven remain unbroken. Just as Pentecost is both the 50th day and it is also the first day of the week, so the Jubilee is both the 50th year and also the first year of the next Sabbatical cycle. Pentecost is a day that fits within and begins the weekly cycle, and the Jubilee is a year that fits within and begins the Sabbatical cycle. So, the cycle of seven, of divine perfection, is never interrupted.