וַיַּ֤רְא אֱלִיה֗וּא כִּ֘י אֵ֤ין מַעֲנֶ֗ה בְּ֭פִי שְׁלֹ֥שֶׁת הָאֲנָשִׁ֗ים וַיִּ֥חַר אַפּֽוֹ׃ (פ)
And when Elihu saw that there was no answer in the mouth of these three men, his wrath was kindled.
Read kabbalistic (mystical) interpretation of Job 32:5: and classical mystical sources.