A worthless physician is literally one who applies curing strategies that are not useful for the suffering. This happens in two ways: either it is due to lack of experience in the physician or to his wickedness. The friends who are contradicted here speak out of a lack of knowledge rather than wickedness in saying, “You suffer due to your sins.” They think they are bringing words of comfort. They were worthless physicians since they did not discover the true reason. “Whitewash with lies,” Job says against them, who think highly of themselves as if they could cure the affliction that occurs in others. He wishes that they had knowledge of the right times, to speak when it is appropriate and to be silent when it is appropriate, since they have realized their mistake. For that would be the beginning and commencement of wisdom for them. For once they  ...