1. Malachi is the last of the twelve minor prophets in the Bible, and his book is also called "Malachi." His story and significance revolve around his role as a prophet in the post-exilic period and his messages that addressed the religious and moral issues of the time.

2. The name Malachi means "my messenger" or "messenger of God," reflecting the prophet's function of delivering divine messages to the people of Israel. The book of Malachi contains a series of conversations between God and the Israelites in which God addresses their spiritual apathy, disobedience, and injustice.

3. Malachi's message is delivered in the form of questions and answers, with God speaking through the prophet to address people's concerns and sins. He confronts their infidelity, lack of reverence, and failure to honor God as their Father and Creator.

4. One of the key issues Malachi addresses is people offering impure and defective sacrifices. He denounced the negligence of the priests in the performance of their duties and called for a return to true worship characterized by reverence, obedience, and integrity.

5. Malachi also addresses the issue of intermarriage with foreign women, which resulted in idolatry and abandonment of allegiance to God. He condemned the practice and urged people to remain true to their covenant with God.

6. Additionally, Malachi fought against social injustices such as the exploitation of workers, the oppression of widows and orphans, and the withholding of tithes and offerings. He emphasized the importance of justice, compassion and generosity within the community.

7. Malachi's message reminds us of God's love and faithfulness to His people despite their unfaithfulness. He encouraged people to turn to God wholeheartedly and experience His blessings and revival. Malachi's prophecies heralded the coming of the Messiah. He spoke of a messenger who would prepare the way for the Lord and purify the people. This prophecy was later associated with John the Baptist, who fulfilled his ministry of preparing the way for Jesus Christ. It also emphasizes the importance of sincere worship and obedience. He challenged people to search their hearts, repent of their sins, and give themselves completely to God. He called on people to change their inner attitudes and outer behaviors in order to develop a deeper relationship with God.

8. All in all, Malachi was the last minor prophet in the Bible, delivering a message during a time of religious and moral decline. His prophecies confront people's apathy, disobedience, and social injustice. Malachi's words point to the need for repentance, true worship, and righteousness within the community. His message also heralded the coming of the Messiah, emphasizing the hope of restoration and redemption through God's faithfulness.