'Unusual' in the Bible

For the Lord will rise up as at Mount Perazim,He will be stirred up as in the valley of Gibeon,To do His task, His unusual task,And to work His work, His extraordinary work.

But they were expecting that he was about to swell up or suddenly fall down dead. But after they had waited a long time and had seen nothing unusual happen to him, they changed their minds and began to say that he was a god.