Isaiah 37:20

(Verses 14ff.) And Hezekiah took the letters from the hand of the messengers, and he read them, and he went up to the house of the Lord, and he spread them out before the Lord. And Hezekiah prayed before the Lord, saying: Lord, God of hosts, God of Israel, who resides above the cherubim, you are the only God of all the kingdoms of the earth. You have made heaven and earth. Incline your ear, Lord, and hear; open your eyes, Lord, and see. And hear all the words of Sennacherib, which he sent to blaspheme the living God.

Third, he asks also in this prayer for the mercy of salvation: and now, O Lord: that all nations may acknowledge that you are God, and there is no other besides you (Jdt 9:19).

Now therefore, O Lord our God, save us from his hand,.... The hand of the king of Assyria.

That all the kingdoms of the earth may know - Since he has been able to subdue all others; and since Judea alone, the land under the protection of Yahweh, would be saved, all the nations would know that it could not be by the power of an idol. The desire of Hezckiah, therefore, was not primarily that of his own personal safely or the safety of his kingdom. It was that Yahweh might vindicate his great and holy name from reproach, and that the world might know that he was the only true God. A supreme regard to the glory of God influenced this pious monarch in his prayers, and we have here a beautiful model of the object which we should have in view when we come before God. It is not primarily that we may be saved; it is not, as the leading motive, that our friends or that the world may be saved; it is that the name of God may be honored. This motive of prayer is one that is with great frequency presented in the Bible (compare Isa 42:8; Isa 43:10, Isa 43:13, Isa 43:25; Deu 32:39; Psa 46:10; Psa 83:18; Neh 9:6; Dan 9:18-19). Perhaps there could have been furnished no more striking proof that Yahweh was the true God, than would be by the defeat of Sennacherib. No other nation had been able to resist the Assyrian arms. The great power of that empire was now concentrated in the single army of Sennacherib. He was coming with great confidence of success. He was approaching the city devoted to Yahweh - the city where the temple was, and the city and people that were everywhere understood to be under his protection. The affairs of the world had arrived at a crisis; and the time had come wheu the great Yahweh could strike a blow which would be felt on all nations, and carry the terror of his name, and the report of his power throughout the earth. Perhaps this was one of the main motives of the destruction of that mighty army. […]