I. What it was that their prophets and ministers designed and aimed at. It was to teach them knowledge, the knowledge of God and his will, and to make them understand doctrine, v. 9. This is God's way of dealing with men, to enlighten men's minds first with the knowledge of his truth, and thus to gain their affections, and bring their wills into a compliance with his laws; thus he enters in by the door, whereas the thief and the robber climb up another way.