Adam Clarke Bible Commentary

I beseech thee, O Lord - Hezekiah knew that, although the words of Isaiah were delivered to him in an absolute form, yet they were to be conditionally understood, else he could not have prayed to God to reverse a purpose which he knew to be irrevocable. Even this passage is a key to many prophecies and Divine declarations: see Isa 18:1-7 of Jeremiah. Hezekiah pleads his uprightness and holy conduct in his own behalf. Was it impious to do so? No; but it certainly did not savor much either of humility or of a due sense of his own weakness. If he had a perfect heart, who made it such? - God. If he did good in God's sights who enabled him to do so? - God. Could he therefore plead in his behalf dispositions and actions which he could neither have felt nor practiced but by the power of the grace of God? I trow not. But the times of this ignorance God winked at. The Gospel teaches us a different lesson. Wept sore - How clouded must his prospects of another world have been! But it is said that, as he saw the nation in danger from the Assyrian army, which was then invading it, and threatened to destroy the religion of the true God, he was greatly affected at the news of his death, as he wished to live to see the enemies of God overthrown. And therefore God promises that he will deliver the city out of the hands of the king of Assyria, at the same time that he promises him a respite of fifteen years, Kg2 20:6. His lamentation on this occasion may be seen in Isaiah, Isa 38:9-22.