Throughout the book of Malachi, we've seen how our hearts are prone to wander. We question God's love based on our circumstances, we give worthless worship to God, question his justice, fail to live as a faithful family, rob him through our tithes and offerings, and grow cynical about worshiping him. Despite this rebellion, God is faithful and unchanging towards his people. As Malachi closes his prophecy and anticipates a messenger to come, we see that because Christ lives, we know God is faithful.