What does Isaiah 10:25 mean?
Through Isaiah, the Lord is offering comfort to His suffering people in Judah (Isaiah 10:20–22). He is not, however, apologizing for their suffering. The Lord is the one who is causing it (Isaiah 10:23). He is using the Assyrians as an instrument of destruction against His people for their disobedience and faithlessness to Him. He wants them to understand that He has not, and will not, abandon them to that destruction.The Lord has told them not to fear the Assyrians because His fury against Israel will soon be satisfied (Isaiah 10:24). This judgment will be enough. His anger against them will end. Then He will turn His anger against the Assyrians. The Lord will punish the Assyrian's kings for their arrogance and boastfulness (Isaiah 10:12).
Even in judgment, the Lord wants His people to know that He is faithful and will keep His promises.
Isaiah 10:20–34 describes the remnant that will be saved in Israel and who will reestablish trust in the Lord. Only these few will be saved, and the Lord's destruction will come. The Lord, though, urges His people not to fear the Assyrians. His anger will soon turn from Israel to Assyria's direction. He will use His supernatural power to end Assyria's oppression over Israel. Even if a great Assyrian army marches all the way to the edge of Jerusalem, the Lord will cut them down as a forest.
Isaiah declares woe on those in Israel and Judah who use the law to take advantage of the poor. These people will not escape the Lord's judgment. He next describes the Assyrians as the Lord's staff of judgment against the godless nation that is His people. When He is done punishing His people, the Lord will turn His anger on the Assyrians, nearly destroying them. Eventually, a remnant of Israelites will return to faith in the Lord. Destruction will come, but it will not consume everything. The Lord will triumph over Assyria.