Isaiah 32:4 - Ellicott's Commentary On The Whole Bible

The heart also of the rash... — “Heart,” as in Proverbs 4:23 and elsewhere, for the intellect rather than the emotions. The “rash” are those that are “hurried,” precipitate, reckless; the “stammerers,” those who have no power to speak clearly of the things of God, who hesitate and are undecided.