The length of Elihu’s speech shows he had many words to share (32:1–37:24).
Elihu probably believed the spirit (Hebrew ruakh) within him urged him to speak (32:8, 19–20; Psalm 39:3). But the reader might regard him as just full of wind (an alternate meaning of the Hebrew ruakh; see study note on Job 15:2–3).
Like Zophar, Elihu needed to speak to find relief (compare 20:2).