In II Kings 18, the Assyrian army under Sennacherib invaded Judah, and the king spoke arrogantly to Hezekiah, king of Judah, about how none of the nations’ gods had delivered them from his hand, and Yahweh their God would not either. But in Chapter 19:25 God had a word for these Assyrians through Isaiah the prophet: “Have you not heard? Long ago I did it; from ancient times I planned it. Now I have brought it to pass, that you should turn fortified cities into ruinous heaps.”
The Assyrians were so proud of what they had accomplished; how no army or city had stood before them. And in their pride they spoke against YHWH. But YHWH reminded them through Isaiah that it was HE who gave them all the power and favor they had; it was HE who had allowed them to have the victories of which they were so boastful. They only accomplished what they had because HE had planned it beforehand and brought it to pass. And now He would glorify Himself by the way that He would humble them, by destroying their army with a single angel (verse 35).
This is a good reminder for us today. Like Sennacherib, we often need to remember that whatever we accomplish is only by God’s will, and with the strength He provides. May God forgive us when we have acted as arrogantly as a Sennacherib — as if we were “self made men” and masters of our own fate. And may His grace prevail, and keep Him from showing us as dramatically as He did that pathetic leader, that he had no reason to boast about all of his “accomplishments” — but that it was GOD who did it!