American Standard Version
For Jehovah will rise up as in mount Perazim, he will 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.

Berean Study Bible
For the LORD will rise up as at Mount Perazim. He will rouse Himself as in the Valley of Gibeon, to do His work, His strange work, and to perform His task, His disturbing task.

Douay-Rheims Bible
For the Lord shall stand up as in the mountain of divisions: he shall be angry as in the valley which is in Gabaon: that he may do his work, his strange work: that he may perform his work, his work is strange to him.

English Revised Version
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.

King James Bible
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.

World English Bible
For Yahweh will rise up as on Mount Perazim. He will be angry as in the valley of Gibeon; that he may do his work, his unusual work, and bring to pass his act, his extraordinary act.

Young's Literal Translation
For as at mount Perazim rise doth Jehovah, As at the valley in Gibeon He is troubled, To do His work -- strange is His work, And to do His deed -- strange is His deed.'

Isaiah 28:21 Additional Translations ...