NET

21 For the Lord will rise up, as he did at Mount Perazim; he will rouse himself, as he did in the Valley of Gibeon, to accomplish his work, his peculiar work, to perform his task, his strange task.

Darby

21 For Jehovah will rise up as on mount Perazim, he will be moved with anger as in the valley of Gibeon; that he may do his work, his strange work, and perform his act, his unwonted act.

KJV

21 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.

Strong's

21 For the LORD^H3068 shall rise up^H6965 as in mount^H2022 Perazim^H6559, he shall be wroth^H7264 as in the valley^H6010 of Gibeon^H1391, that he may do^H6213 his work^H4639, his strange^H2114 work^H4639; and bring to pass^H5647 his act^H5656, his strange^H5237 act^H5656.