The prophet Isaiah, spoke of the birth of Jesus Christ over 700 years before Jesus was born according to those who followed Him in the 1st Century. There should be no doubt that the man, Jesus of Nazareth, born in Bethlehem, was an actual historic figure. That the man, Jesus, lived and died on a cross and had a great following is also a historic fact.
Consider, then the actual words of the prophet, Isaiah:
For a child will be born to us, a son will be given to us; and the government will rest on His shoulders; and His name will be called Wonderful Counselor, Mighty God, Eternal Father, Prince of Peace. There will be no end to the increase of His government or of peace, on the throne of David and over his kingdom, to establish it and to uphold it with justice and righteousness from then on and forevermore. (Isaiah 9:6-7)
At the end of this blog article is another, later, prophetic word spoken by Isaiah. The application to the historic figure of Jesus is uncanny, if it is not God speaking through Isaiah centuries before the life and death of this man, Jesus.