Than seven men that can render a reason - Seven here only means perfection, abundance, or multitude. He is wiser in his own eyes than a multitude of the wisest men. "Than seven men that sytt and teach." - Coverdale; i.e., than seven doctors of the law, or heads of the schools of the prophets, who always sat while they taught.
Seven - The definite number used for the indefinite (compare Proverbs 24:16).
Reason - Better, a right judgment.