'Unable' in the Bible

During the reign of Ahaz son of Jotham, son of Uzziah, king of Judah, King Rezin of Syria and King Pekah son of Remaliah of Israel marched up to Jerusalem to do battle, but they were unable to prevail against it.

Together they bend low and kneel down; they are unable to rescue the images; they themselves head off into captivity.

All their watchmen are blind, they are unaware. All of them are like mute dogs, unable to bark. They pant, lie down, and love to snooze.

But the wicked are like a surging sea that is unable to be quiet; its waves toss up mud and sand.