By claiming that he gets his knowledge from afar,
Elihu is probably trying to reassure his listeners that he will not come with novel or superficial ideas. Elihu is the youngest among the speakers (Job 32:6), and therefore he cannot assume that his listeners will pay attention to his words. It is something that he must convince and request them to do (see Job 32:10; Job 33:1–3, Job 33:31; Job 34:2).
3 I will get my knowledge from afar and ascribe righteousness to my Maker.