In this lesson, we examine Peter’s message at Pentecost, which shows that the events of Acts 2 marked the beginning of Israel’s prophetic last days. Joel’s prophecy about signs, wonders, and the Spirit being poured out had begun, but Israel’s continued unbelief—culminating in Stephen’s stoning—interrupted the prophetic timeline. Scripture therefore teaches two sets of last days: Israel’s prophesied last days tied to the Tribulation and Kingdom, and the Body of Christ’s last days marked by the moral decline described in 2 Timothy 3. As these trends intensify, believers are reminded of the Rapture’s imminence and the urgency of sharing the gospel before judgment resumes for Israel.