For truly my words shall not be false - This is designed to conciliate attention. It is a professed purpose to state nothing but truth. Even in order to vindicate the ways of God he would state nothing but what would bear the most rigid examination. Job had charged on his friends a purpose “to speak wickedly for God;” to make use of unsound arguments in vindicating his cause, (see the notes at Job 13:7-8), and Elihu now says that “he” will make use of no such reasoning, but that all that he says shall be founded in strict truth.
He that is perfect in knowledge is with thee - This refers undoubtedly to Elihu himself, and is a claim to a clear understanding of the subject. He did not doubt that he was right, and that he had some views which were worthy of their attention. The main idea is, that he was of “sound” knowledge; that his views were not sophistical and captious; that they were founded in truth, and were worthy, therefore. of their profound attention.