Matthew Poole and continuators on Job 40:5

5. Once have I spoken, but I will not answer : yea, twice , but I will proceed no further .

Or, speak again, answering being oft put for speaking. I will contend no more with thee.

i. e. Oft times, or again and again, the definite number being used indefinitely.

In such bold and presumptuous Expressions and Accusations of thy Providence towards me. Vain therefore are the Excuses which some Interpreters make for Iob, as if he were faultless in his foregoing Discourses, when both God chargeth him with faultiness therein, and Iob himself confesseth it.