And he said, "Along which way shall we ascend?" So he responded, "Along the desert of Idumea.
Other versions
King James Version
And he said, Which way shall we go up? And he answered, The way through the wilderness of Edom.English Standard Version
Then he said, "By which way shall we march?" Jehoram answered, "By the way of the wilderness of Edom."New International Version
"By what route shall we attack?" he asked. "Through the Desert of Edom," he answered.