Why do Christians believe in Christ's sovereignty?

Christ's sovereignty is a foundational belief in Reformed theology, rooted deeply in the authority and divinity of Christ. Through the lens of Scripture, we see that all power and authority have been given to him, as stated in Matthew 28:18, 'All power is given unto me in heaven and in earth.' This signifies that he governs all aspects of creation, including salvation. The sovereignty of Christ also reflects God’s eternal plan through fulfilled prophecies and divine orchestration of events leading to the redemption of his people. Understanding Christ's sovereignty comforts believers in the knowledge that God is in control, guiding the course of history and individual lives toward his ultimate purpose. This highlights the trustworthiness of God's promises and assures believers of their secure position in Christ.