Peace
ISIAIH told Ahaz God will give him a sign to defeat the Assyrians and that Sign is that Jesus will come 700 years later, how is that make any sense man. Even if the translation was wrong, what is that sign that ISIAIH was talking about. Please, it's just so obvious the prophecy isn't about Jesus (peace be upon him) . Please, read it for yourself, think about it, it's just too obvious.
Salam.