Joel

Joel was written by the prophet Joel son of Pethuel. Little is known about his personal life. The date of the book is debated — proposals range from the 9th century to the 5th century BC. The book's focus on the Temple and Judah suggests Joel ministered in or near Jerusalem. The absence of references to Assyria or Babylon makes precise dating difficult.

Joel contains 3 chapters (4 in the Hebrew Bible). Chapter 1 describes a devastating locust plague, chapter 2 presents both judgment and the promise of the Spirit's outpouring, and chapter 3 describes the final Day of the LORD and the restoration of Judah.

The main theme of Joel is the Day of the LORD — a time of divine judgment and ultimate restoration. Using a devastating locust plague as his starting point, Joel portrays the Day of the LORD as both terrifying and hopeful: 'everyone who calls on the name of the LORD will be saved' (2:32).

Key teachings include: the locust plague as a harbinger of divine judgment (chapter 1), the call to repentance — 'Rend your heart and not your garments' (2:13), the promise of the Spirit's outpouring — 'I will pour out my Spirit on all people' (2:28-29), the cosmic signs preceding the Day of the LORD (2:30-31), and the judgment of nations in the Valley of Jehoshaphat (3:2).

Joel's prophecy of the Spirit's outpouring (2:28-32) is directly quoted by Peter at Pentecost (Acts 2:16-21) to explain the birth of the church. Joel's phrase 'everyone who calls on the name of the LORD will be saved' (2:32) is cited by Paul as the foundation of gospel preaching (Romans 10:13). The book bridges Old Testament prophecy and New Testament fulfillment.