How do we know Christ's authority as our Apostle?

Christ is called the Apostle, which signifies His role as God's messenger, conveying the message of salvation. Hebrews 1:1-2 notes that God spoke through prophets in the past but has now spoken through His Son. This authority is established in how Christ preached the Gospel, announcing good news to the poor, healing the brokenhearted, and declaring liberty to captives (Luke 4:18). His fulfillment of this role showcases His divine authority and the truth of His message, reinforcing our confidence in His redemptive work.