C. F. Keil and Franz Delitzsch on 2 Kings 19:15

2Ki 19:15

In opposition to the delusion of the Assyrians, he describes Jehovah, the God of Israel, as the only God of all the kingdoms of the earth, since He was the Creator of heaven and earth. הכּרבים ישׁב (see at 1Sa 4:4 and Exo 25:22) indicates the covenant-relation into which Jehovah, the almighty Creator and Ruler of the whole world, had entered towards Israel. As the covenant God who was enthroned above the cherubim the Lord was bound to help His people, if they turned to Him with faith in the time of their distress and entreated His assistance; and as the only God of all the world He had the power to help. In Isaiah, צבאות, which is very rare in historical prose, but very common in prophetical addresses, is added to the name יהוה, and thus Jehovah at the very outset is addressed as the God of the universe. On the meaning of צבאות, see at 1Sa 1:3. On האלהים הוּא אתּה, see 2Sa 7:28 and 1Ki 18:39.