For thy mouth uttereth thine iniquity - Margin, “teacheth.” That is, “your whole argument shows that you are a guilty man. A man who can defend such positions about God cannot be a pious man, or have any proper veneration for the Most High.” A man may pursue an argument, and defend positions, that shall as certainly show that he is destitute of religion as though he lived an abandoned life; and he who holds opinions that are dishonorable to God, can no more be a pious man than if he dishonored God by violating his law.
Thou choosest the tongue of the crafty - Instead of pursuing an argument with candor and sincerity, you have resorted to miserable sophisms, such as running disputants use. You have not showed a disposition to ascertain and defend the truth, but have relied on the arts and evasions of the subtle disputant and the rhetorician. His whole discourse, according to Eliphaz, was a work of mere art, designed to blind his hearers; to deceive them with a favorable opinion of his piety; and to give some plausible, but delusive view of the government of God.