Although outwardly Judah appeared to be the same after the fall of the Northern Kingdom as before, it was not so. A very different situation confronted Hezekiah from that which had confronted his father Ahaz when he called on Assyria for help against Syria and Israel. Now there were no "buffer states" between Assyria's empire and little Judah. And it was only a score of years after Samaria fell when Jerusalem felt the full force of Assyria. Sennacherib, fourth in that remarkable list of the six kings[1] who made Nineveh mistress of Asia, sent an army to besiege Jerusalem, with a summons to Hezekiah to surrender his capital. [1] Tiglath-pileser, 745-727 B.C.; Shalmaneser, 727-722; Sargon, 722-705; Sennacherib, 705-681; Esar-haddon, 680-668; Ashurbanipal, 668-626. A different spirit ruled this king. Isaiah, the same great prophet who had counseled Ahaz to resist Pekah and Rezin but had failed to move him to faith in Jehovah, found now in Ahaz's son a vital faith in the God of Israel in this far sorer crisis. In response to that faith Isaiah was commissioned by God to assure king and people of a great deliverance. The case, to all human seeming, was hopeless. But the resources at God's disposal are boundless, and at one blow "the angel of Jehovah" reduced the proud Assyrian host to impotency and drove them away in retreat. II Kings 19:35. Scribes who record the achievements of ancient monarchs are not accustomed to betray any of the failures of their royal heroes. But between the lines of Sennacherib's records we can read confirmation of the Bible's report of some great catastrophe to Assyrian arms. Jehovah rewarded the faith of his people in him. The seventh century before Christ, which began just after this event, witnessed both the rise of Assyria to its greatest height, and its sudden fall before the Chaldeans, a people from the Persian Gulf, who succeeded in mastering ancient Babylon and in winning for it a greater glory than it had ever known in former times. Even in Hezekiah's reign these Chaldeans, under their leader Merodach-baladan, were already challenging the supremacy of Nineveh, and in doing so were seeking allies in the west. When the king of Judah yielded to the dictates of pride and showed to these Chaldean ambassadors his treasures, Isaiah announced to him that the final ruin of Judah was to come in future days from this source, and not from Nineveh as might then have been anticipated.