How do we know Jesus is the fulfillment of the prophecy in Deuteronomy?

The prophecy in Deuteronomy 18 regarding a prophet like Moses directly points to Jesus Christ. The New Testament explicitly affirms that Jesus is this prophet by revealing His lineage as a Jew from the tribe of Judah and by emphasizing that He spoke the very words of God. In John 12:49, Jesus states that He speaks not on His own authority, but in accordance with what the Father has commanded Him. This divine affirmation supports the understanding that Jesus is indeed the promised prophet who mediates God’s voice to His people, calling them to repentance and belief in Him.