What does Isaiah 5:25 mean?

That’s why the Lord’s anger burned against his people. He raised his hand against them and struck them down. The mountains shook, and the bodies of the dead were like trash in the streets. Even after all this, his anger hasn’t ended—his hand is still raised. Isaiah 5:25 - Modern Text Bible

(God’s judgment has already hit hard, but it’s not over yet. The devastation is huge, but there’s still more to come because the people haven’t changed.)