In the chaos of uncertainties which surrounds the chronology of King Hezekiah's reign, it is impossible to fix a precise date to the sickness which almost brought him to the grave. It has, however, been conjectured by some Assyriologists that the story of this episode has been displaced, because it seemed to break the continuity of the narrative of the Assyrian invasion; and that, though it is placed in the Book of Kings after the deliverance from Sennacherib, it really followed the earlier incursion of Sargon. This is rendered more probable by Isaiah's promise (2 Kings xx. 6), "I will deliver thee and this city out of the hand of the King of Assyria," and by the fact that Hezekiah still possessed such numerous and splendid treasures to display to the ambassadors of Merodach-Baladan. This could hardly have been the case after he had been forced to pay a fine to the King of Assyria of all the silver that was found in the house of the Lord, and in the treasures of the king's house, to cut off the gold from the doors and pillars of the Temple, and even to send as captives to Nineveh some of his wives, and of the eunuchs of his palace.[512] The date "in those days" (2 Kings xx. 1) is vague and elastic, and may apply to any time before or after the great invasion. He was sick unto death. The only indication which we have of the nature of his illness is that it took the form of a carbuncle or imposthume,[513] which could be locally treated, but which, in days of very imperfect therapeutic knowledge, might easily end in death, especially if it were on the back of the neck. The conjecture of Witsius and others that it was a form of the plague which they suppose to have caused the disaster to the Assyrian army has nothing whatever to recommend it. Seeing the fatal character of his illness, Isaiah came to the king with the dark message, "Set thine house in order; for thou shalt die, and not live." The message is interesting as furnishing yet another proof that even the most positive announcements of the prophets were, and were always meant to be, to some extent hypothetical and dependent on unexpressed conditions. This was the case with the famous prophecy of Micah that Zion should be ploughed down into a heap of ruins. It was never fulfilled; yet the prophet lost none of his authority, for it was well understood that the doom which would otherwise have been carried out had been averted by timely penitence.