If I had called, and he had answered me - It is remarked by Schultens, that the expressions in these verses are all taken from courts of justice. If so, the meaning is, that even if Job should call the Almighty to a judicial action, and he should respond to him, and consent to submit the great question about his innocence, and about the justice of the divine dealings with him, to trial, yet that such was the distance between God and him, that he could not hope successfully to contend with him in the argument. He would, therefore, prostrate himself in a suppliant manner, and implore his mercy and compassion - submitting to him as having all power, and as being a just and righteous Sovereign.
Would I not believe - I cannot believe that he would enter into my complaint. He deals with me in a manner so severe; he acts toward me so much as a sovereign, that I have no reason to suppose that he would not continue to act toward me in the same way still.