KJV:
For the LORD shall rise up as in mount Perazim, he shall be wroth as in the valley of Gibeon, that he may do his work, his strange work; and bring to pass his act, his strange act.
NASB:
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.