Verse 19. He - Now he returns to the third person: such changes are frequent in this book. Go - To the grave and hell, where he shall meet with his wicked parents, who by their counsel and example, led him into his evil courses. See - Neither the light of this life, to which they shall never return: nor of the next life, to which they shall never be admitted.
Verse 20. Understandeth not - Hath not true wisdom. The beasts - Though he hath the outward shape of a man, yet in truth he is a beast, a stupid, and unreasonable creature.