What does it mean that Christ rules through the preaching of the gospel?

The sermon articulates that through the preaching of the gospel, Christ actively rules and governs the world by calling out His elect. It is through this means that God has ordained that His message of grace is shared, leading individuals to faith in Christ. The church, likened to the moon in its reflective capacity, does not generate its own light but merely reflects the glory of Christ. This reinforces the importance of faithful gospel preaching without compromise and points to the assurance that God is sovereignly working through such messages. When the gospel is preached, it carries the divine authority to reach and transform hearts, reaffirming Christ's reign in the lives of His people and bringing them closer to Him.