Seven-hundred years before Christ's birth, and even in the midst of Israel's disobedience and turning away from God's commandments...
God's promise of His sacrifice for us all to reconcile us to Himself was prophesied through Isaiah ...
Isaiah 1:18
18 Come now, and let us reason together, said the LORD: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool.
Isaiah 9:6
6 For to us a child is born, to us a son is given: and the government shall be on his shoulder: and his name shall be called Wonderful, Counselor, The mighty God, The everlasting Father, The Prince of Peace.