Isaiah, who had been quietly and carefully studying the entire situation since the embassy came to Jotham, understood well enough that an intrigue must be brewing in Jerusalem against the young King. When the report reached the city that the enemy was on the march, Isaiah's searching inquiries and careful observation of the leaders of the capital resulted in the discovery that the son of Tabeal was in league with Rezin and Pekah. It was Isaiah at this meeting, who informed Ahaz that his immediate danger was as much within his own city as from the enemy that was approaching. No wonder, then, that "his heart trembled, and the heart of his people, as the trees of the forest tremble with the wind."

But Isaiah immediately reassured the trembling Ahaz in the following words:

"Take heed and keep thyself calm; fear not, neither be fainthearted because of these two fag ends of smoking firebrands, because of the fierce anger of Rezin and Syria and of the son of Remaliah. Syria, with Israel, hath purposed evil against thee, saying, 'Let us go up against Judah and distress it and overpower it and appoint the son of Tabeal king in its midst.' But thus saith the Lord God: It shall not stand, neither shall it come to pass, for, the head of Syria is Damascus and the head of Damascus is Rezin, and the head of Israel is Samaria and the head of Samaria is Remaliah's son. Verily, if you will not hold fast, ye shall not stand fast."

Ahaz laughed at the idea of keeping quiet and having no fear, under the conditions. He turned away impatiently from the prophet and proceeded with his business of examining the reservoir. Isaiah, however, would not be put off with mere impatience.

"Ask thee a sign of the Lord, thy God," he cried to Ahaz. "Ask it either in the depths of Sheol or in the heights above."

But Ahaz replied, "I will not ask, neither will I put the Lord to the test."

Then Isaiah said:

"Hear now, O House of David! Is it too small a thing for you to weary men, that ye must also weary my God? Therefore the Lord, Himself, will give you a sign. Behold, a young woman will bear a son and call his name Immanuel (God is with us). Before this child shall know to refuse the evil and choose the good those two kings before whom thou tremblest shall be deserted."

Ahaz was tired of mere words. Advice he had enough; he wanted now to act. In fact, when the knowledge of the political intrigue in Jerusalem became known to him, he immediately made up his mind what to do. He, therefore, again turned from Isaiah and ordered his retinue to continue the examination of the water supply.

Isaiah then tried another form of argument with this cowardly young king, in order to bring him to his senses. He, himself, was positive that Tiglath-Pileser, who was at that time in Asia Minor, had, no doubt, been informed by his spies of the action taken by Rezin and Pekah. Isaiah felt sure, also, that Tiglath-Pileser would immediately invade Syria. He knew, in addition, that neither Rezin nor Pekah was strong and powerful enough, at this time, to wage a protracted war with Assyria; that is why he described them as "two fag ends of smoking firebrands." He, therefore, concluded that, at the first information of Tiglath-Pileser's march into the northern country, Rezin and Pekah would have to return to defend their own lands.