8-11. Hezekiah said unto Isaiah, What will be the sign that the Lord shall heal me—His recovery in the course of nature was so unlooked for, that the king asked for some token to justify his reliance on the truth of the prophet's communication; and the sign he specified was granted to him. The shadow of the sun went back upon the dial of Ahaz the ten degrees it had gone down. Various conjectures have been formed as to this dial. The word in the original is "degrees," or "steps," and hence many commentators have supposed that it was a stair, so artfully contrived, that the shadows on the steps indicated the hours and course of the sun. But it is more probable that it was a proper instrument, and, from the Hebrews having no term to designate it, that it was one of the foreign novelties imported from Babylon by Ahaz. It seems to have been of such magnitude, and so placed in the court, that Isaiah could point to it, and the king see it, from his chamber. The retrogression of the sun's shadow on the dial was miraculously accomplished by the omnipotent power of God; but the phenomenon was temporary, local, confined to the notice, and intended for the satisfaction, only of Hezekiah and his court.

     12-19. Berodach-baladan— (Isa 39:1), the first king of Babylon mentioned in sacred history; formerly its rulers were viceroys of the Assyrian monarchs. This individual threw off the yoke, and asserting his independence, made with varying success, a long and obstinate resistance [RAWLINSON, Outlines]. The message of congratulation to Hezekiah, was, in all likelihood, accompanied with proposals for a defensive alliance against their common Assyrian enemy. The king of Judah, flattered with this honor, showed the ambassadors all his treasures, his armory and warlike stores; and his motive for this was evidently that the Babylonian deputies might be the more induced to prize his friendship.

     13, 14. the silver, and the gold—He paid so much tribute to Sennacherib as exhausted his treasury (compare 2Ki 18:16). But, after the destruction of Sennacherib, presents were brought him from various quarters, out of respect to a king who, by his faith and prayer, saved his country; and besides, it is by no means improbable that from the corpses in the Assyrian camp, all the gold and silver he had paid might be recovered. The vain display, however, was offensive to his divine liege lord, who sent Isaiah to reprove him. The answer he gave the prophet (2Ki 22:14) shows how he was elated by the compliment of their visit; but it was wrong, as presenting a bait for the cupidity of these rapacious foreigners, who, at no distant period, would return and pillage his country, and transfer all the possessions he ostentatiously displayed to Babylon, as well as his posterity to be court attendants in that country—(see on 2Ch 32:31).

     12-19. Berodach-baladan— (Isa 39:1), the first king of Babylon mentioned in sacred history; formerly its rulers were viceroys of the Assyrian monarchs. This individual threw off the yoke, and asserting his independence, made with varying success, a long and obstinate resistance [RAWLINSON, Outlines]. The message of congratulation to Hezekiah, was, in all likelihood, accompanied with proposals for a defensive alliance against their common Assyrian enemy. The king of Judah, flattered with this honor, showed the ambassadors all his treasures, his armory and warlike stores; and his motive for this was evidently that the Babylonian deputies might be the more induced to prize his friendship.

     19. Good is the word of the Lord which thou hast spoken—indicating a humble and pious resignation to the divine will. The concluding part of his reply was uttered after a pause and was probably an ejaculation to himself, expressing his thankfulness, that, though great afflictions should befall his descendants, the execution of the divine judgment was to be suspended during his own lifetime.

     20. pool and a conduit—(See on 2Ch 32:30).