How do we know that Jesus is the final revelation of God?

Jesus is presented in Hebrews 1 as the brightness of God's glory and the express image of His person, indicating that He fully represents God. The text asserts that He is the heir of all things, the creator and sustainer of the universe, and the one who purged our sins, demonstrating His divine authority and role in redemption. This completeness in His revelation signifies that no further prophets or revelations are needed, as everything God wishes to communicate has been accomplished in Christ.