Why is Jesus' first and second coming important for Christians?

The distinction between Jesus' first coming in humility to suffer for our sins and His second coming in glory to reign is crucial in Reformed theology. In Luke 17:25, Jesus speaks of His suffering, while He anticipates His return characterized by power and majesty. This duality informs Christian eschatology and soteriology, showing the completeness of God's plan for redemption. The first coming provided atonement, while the second promises the fulfillment of that redemption through Christ's reign. Believers must hold both truths to avoid misunderstanding Scripture and the nature of Christ's kingdom.