I have been reading from Calvin's Commentariy on Isaiah and I had to included this portion because it is so sublime. I would encourage you to open you Bible to read the first seven verses of Isaiah 9 and may the Lord use this expostion to richly bless you..
by John Calvin
1. Yet the darkness shall not be. He begins to comfort the wretched by the hope of alleviation, that they may not be swallowed up by the huge mass of distresses. Many take these words in quite an opposite meaning, that is, as a threatening which denounces against the Jews a heavier affliction than that with which Tiglath-pileser (2 Kings 15:29) and Shalmanezer (2 Kings 17:6) afflicted them. The former inflicted a heavy calamity, the latter inflicted one still heavier, for he carried the twelve tribes into captivity, and blotted out the name of the nation. Some think that he now foretells the heaviest calamity of all, for if it be compared with the former two, it exceeds both of them. Though I am not prepared to reject this view, for it does not want plausibility, yet I rather favor a different opinion. The other interpretation is indeed more plausible, that the Prophet intended to deprive hypocrites of every enjoyment, that they might not imagine that this calamity would quickly pass away like a storm as the others had done, for it would be utterly destructive; and so we shall take the particle ky (ki) in its literal meaning. [138]