How do we know that Jesus Christ is the King of Kings?

The title 'King of Kings' is given to Jesus to emphasize His supreme sovereign authority over all earthly rulers and spiritual powers. In passages such as Psalm 103, we see that God’s kingdom rules over all, and in Revelation 19, Jesus is depicted returning as the King of Kings and Lord of Lords. This serves as a declaration of His divine kingship and sovereignty. Ultimately, His coronation was marked by His purchase of salvation through His blood, granting Him the rightful authority to reign over His people eternally.