How do we know Jesus is the promised Savior in Isaiah?

In Isaiah 19, the prophet speaks of God sending 'a Saviour and a Great One' who will deliver the Egyptians from their oppression. This is a significant declaration, as it reveals that God's plan of salvation extends beyond Israel to all the nations, including the historically idolatrous Egyptians. The mention of a great Savior aligns with New Testament revelations regarding Jesus Christ, who fulfills the messianic prophecies. As believers, we understand that Christ's sacrificial death and resurrection provide the means for redemption for all who call upon His name, thus fulfilling Isaiah's prophecy in a profound way.