As for his father. — There is here a recurrence to the second case, to bring out more sharply the contrast between the two, and to emphasise the fact insisted upon, that each individual must be judged according to his own character, without help or prejudice from that of his father.
This third case was especially adapted to the prophet’s purpose of refuting the proverb, because here was the father who had “eaten sour grapes,” and his son’s teeth were not to be set on edge.