Matthew Poole and continuators on Job 6:15

15. My brethren have dealt deceitfully as a brook, and as the stream of brooks they pass away:

i. e. My kinsmen or three friends; For though Eliphaz onely had spoken, the other two shewed their approbation of his discourse or, at least, of that part of it which contained his censure of Iobs person and State.

Under a pretence of friendship and kindness dealing unrighteously and unmercifully with me, and adding to these afflictions which they said they came to remove.

Which quickly vanish and deceive the hopes of the thirsty traveller.