Elihu speaks of "words" as if they were objects, and of speaking many words as if it were piling those objects one on top of the other. The word "knowledge" can be translated with a verbal phrase. AT: "he speaks many words without knowing what he is talking about" (See: [[rc://en/ta/man/translate/figs-metaphor]] and [[rc://en/ta/man/translate/figs-abstractnouns]])