Targum Jonathan on Numbers
And he looked upon Jethro, who had been made proselyte, and took up the parable of his prophecy, and said: How strong is thy habitation, who hast set thy dwelling in the clefts of the rocks!
Targum Jerusalem
And when he looked upon the Shalmaia, taking up the parable of his prophecy, he said, How strong is thy abode, who hast set the house of thy dwelling in the clefts of the rock!