They are confounded because they had hoped; their arrival brings disappointment.
Eliphaz had been very severe in his censures of Job; and his companions, though as yet they had said little, yet had intimated their concurrence with him. Their unkindness therein poor Job here complains of, as an aggravation of his calamity and a further excuse of his desire to die; for what satisfaction could he ever expect in this world when those that should have...
Commenting on Job 6:14-21
For now ye are nothing,.... Once they seemed to be something to him; he thought them men wise, good, and religious, kind, bountiful, and tenderhearted; but now he found them otherwise, they were nothing to him as friends or as comforters in his distress; the "Cetib", or Scripture, is, as we read, and is followed by many; but the marginal reading is, "now ye are...
literally, "each had hoped"; namely, that their companions would find water. The greater had been their hopes the more bitter now their disappointment; they came thither--to the place. and were ashamed--literally, "their countenances burn," an Oriental phrase for the shame and consternation of deceived expectation; so "ashamed" as to disappointment (Rom 5:5).