The answer is: 50

Lev 23:16 - Seven weeks between the festivals, the fiftieth day after the Sabbath - hence the Feast of Weeks is also known as Pentecost which is the Greek word for fiftieth.

When you dive into the timeline of Jewish feasts, there's an exciting rhythm to uncover. The Feast of Firstfruits kicks off the barley harvest during Passover, but it doesn’t just end there! After celebrating those first sheaves of grain, the people start a counting game known as the "Omer." Yes, it's basically a countdown for seven weeks, each week equaling seven days—talk about a busy farming schedule! When you sum that up, you've got 49 days between the two feasts, and then comes a grand celebration on that fiftieth day known as the Feast of Weeks—or Pentecost if you're going Greek!

Now, here's where it gets even more intriguing. Pentecost is significant not only for its agricultural implications but also for its spiritual symbolism. It marked one of the harvests but was also appointed by God as a time for the receiving of the Law at Sinai nearly 50 days after the Exodus—pretty profound, right? Think about it: both events—shifting from harvest to receiving divine law—speak to themes of renewal, instruction, and community.

This connection doesn’t just stop at the Old Testament. Feel the echoes of this 50-day period in the New Testament, especially with the coming of the Holy Spirit to the followers of Jesus after His resurrection, giving rise to the early church. Harvesting was a big deal, yes, but this harvest was of souls! The cyclical nature of these feasts reinforces not just a connection to faith, but also to life’s rhythms.