The books of Joel, Haggai, Obadiah, Nahum, and Malachi are part of the Old Testament in the Bible and are known as prophetic books. Each book addresses different historical contexts and contains messages from the respective prophets. Here's a brief overview of what each book deals with: Joel: The book of Joel focuses on the theme of judgment and restoration. It begins with a description of a devastating locust plague and calls for repentance. Joel sees this plague as a warning of the Day of the Lord, a future time of divine judgment. He urges the people to turn back to God, promising restoration and blessings for those who repent. Haggai: Haggai was a prophet who spoke to the Jewish community in Jerusalem after their return from exile in Babylon. The book of Haggai addresses the people's indifference towards rebuilding the temple. Haggai calls for a renewed focus on rebuilding the house of God, encouraging the people to prioritize their spiritual responsibilities. He promises that God's presence will return to the temple and bring blessings to the people. Obadiah: The book of Obadiah is the shortest book in the Old Testament and contains a message of judgment against the nation of Edom. Edom was a neighboring nation of Israel that had a history of hostility and aggression towards Israel. Obadiah's prophecy declares that Edom will be brought low and held accountable for its actions. It also includes promises of restoration for Israel in contrast to the fate of Edom. Nahum: Nahum prophesied against the city of Nineveh, the capital of the Assyrian Empire. The Assyrians were known for their cruelty and oppression, particularly towards the Israelites. Nahum predicts the downfall of Nineveh and the end of Assyrian dominance, bringing comfort to the oppressed. The book highlights God's justice and the eventual deliverance of those who suffer under oppressive powers. Malachi: Malachi is the last book in the Old Testament, and it addresses the spiritual and moral decline among the people of Israel after their return from exile. Malachi rebukes the priests and the people for their corrupt practices, such as offering blemished sacrifices and neglecting their religious duties. The book emphasizes the importance of true worship and genuine repentance, and it concludes with the promise of the coming of the Messiah. These books contain a mix of messages of judgment, restoration, repentance, and promises of future blessings. They provide historical context and spiritual guidance to the people of Israel during different periods in their history.