How do we know that Christ's authority is true?

We know Christ's authority is true because it is demonstrated through His miraculous works and the fulfillment of Old Testament prophecies. In Luke 7:16, after Jesus raised the widow's son, the people recognized Him as a great prophet and glorified God, affirming His divine authority. Moreover, Christ's teachings constantly reveal that He operates under the authority of the Father, as seen in John 10:25 where He states that His works bear witness to Him. Therefore, the miracles, teachings, and prophecies fulfilled by Jesus collectively affirm His authority as the Sovereign God in flesh.