(8) What shall be the sign . . .?--Comp. 2Kings 19:29 and note; Isaiah 7:11 seq., where Isaiah requests Ahaz to choose a sign. The sign was obviously a token that the prophet's word would come true.

Verse 8. - And Hezekiah said unto Isaiah, What shall be the sign that the Lord will heal me? Having regard to the weakness of human faith, God, under the old covenant, often gave, or offered, near "signs" of promised blessings that were more remote, in order to sustain and encourage the doubtful and the wavering (comp. Exodus 3:12; 2 Kings 19:29; Isaiah 7:11, 14, etc.). Hezekiah assumes that a near "sign" will now he granted to him, and simply asks what the sign is to be. And that I shall go up into the house of the Lord the third day? Three days would be a long and weary time to wait. It was not unnatural that Hezekiah should crave some more immediate assurance that his prayer was indeed heard. Neither God nor the prophet was angry at his request.

20:1-11 Hezekiah was sick unto death, in the same year in which the king of Assyria besieged Jerusalem. A warning to prepare for death was brought to Hezekiah by Isaiah. Prayer is one of the best preparations for death, because by it we fetch in strength and grace from God, to enable us to finish well. He wept sorely: some gather from hence that he was unwilling to die; it is in the nature of man to dread the separation of soul and body. There was also something peculiar in Hezekiah's case; he was now in the midst of his usefulness. Let Hezekiah's prayer, see Isa 38. interpret his tears; in that is nothing which is like his having been under that fear of death, which has bondage or torment. Hezekiah's piety made his sick-bed easy. O Lord, remember now; he does not speak as if God needed to be put in mind of any thing by us; nor, as if the reward might be demanded as due; it is Christ's righteousness only that is the purchase of mercy and grace. Hezekiah does not pray, Lord, spare me; but, Lord, remember me; whether I live or die, let me be thine. God always hears the prayers of the broken in heart, and will give health, length of days, and temporal deliverances, as much and as long as is truly good for them. Means were to be used for Hezekiah's recovery; yet, considering to what a height the disease was come, and how suddenly it was checked, the cure was miraculous. It is our duty, when sick, to use such means as are proper to help nature, else we do not trust God, but tempt him. For the confirmation of his faith, the shadow of the sun was carried back, and the light was continued longer than usual, in a miraculous manner. This work of wonder shows the power of God in heaven as well as on earth, the great notice he takes of prayer, and the great favour he bears to his chosen.And Hezekiah said unto Isaiah,.... Or "had said", (w) before the plaster of figs was directed to, or, however, laid on, and as soon as he was told he should be healed:

what shall be the sign that the Lord will heal me, and that I shall go up into the house of the Lord the third day? not that he disbelieved the promise of God, or doubted of a cure, but this he requested for the confirmation of his faith; which good men sometimes asked, when they doubted not, as Gideon; and Ahaz, Hezekiah's father, was bid to ask a sign for the like purpose, and it was resented in him that he did not, see Judges 6:17.

(w) "dixerat autem", V. L. Vatablus.