What knowest thou that we know not? - What pretensions or claims to wisdom have you which we have not? We have had, at least, equal advantages, and may be presumed to know as much as you.

What knowest thou - Is it likely that thy intellect is greater than ours; and that thou hast cultivated it better than we have done ours?

What understandest thou - Or, Dost thou understand any thing, and it is not with us? Show us any point of knowledge possessed by thyself, of which we are ignorant.

What knowest thou that we know not?.... Which are pretty near the words of Job to his friends, Job 12:3; and to the same sense is what follows:

what understandest thou which is not in us? in our hearts, minds, and understanding; or among us, which one or other, or all of us, have not: yet all men have not knowledge alike; some that profess themselves to be wise, and to have a large share of knowledge, are fools; and such who think they know something extraordinary, and more than others, know nothing as they ought to know; and such who have gifts of real knowledge have them different one from another; even of the things known there is not a like degree of knowledge, and particularly in spiritual things; some are little children in understanding, some are young men and know more, and some are fathers, and know most of all; an equality in knowledge belongs to another state, to the latter day glory, when the watchmen shall see eye to eye, and all shall know the Lord, from the least to the greatest, and especially to the ultimate glory, when saints will know as they are known.

What knowest thou, that we know not? what understandest thou, which is not in us?

9. in us-or, "with us," Hebraism for "we are aware of."

15:1-16 Eliphaz begins a second attack upon Job, instead of being softened by his complaints. He unjustly charges Job with casting off the fear of God, and all regard to him, and restraining prayer. See in what religion is summed up, fearing God, and praying to him; the former the most needful principle, the latter the most needful practice. Eliphaz charges Job with self-conceit. He charges him with contempt of the counsels and comforts given him by his friends. We are apt to think that which we ourselves say is important, when others, with reason, think little of it. He charges him with opposition to God. Eliphaz ought not to have put harsh constructions upon the words of one well known for piety, and now in temptation. It is plain that these disputants were deeply convinced of the doctrine of original sin, and the total depravity of human nature. Shall we not admire the patience of God in bearing with us? and still more his love to us in the redemption of Christ Jesus his beloved Son?