II. The nature of the prophecy. It is a vision, being revealed to him in a vision, when he was awake, and heard the words of God, and saw the visions of the Almighty (as Balaam speaks, Num. xxiv. 4), though perhaps it was not so illustrious a vision at first as that afterwards, ch. vi. 1. The prophets were called seers, or seeing men, and therefore their prophecies are fitly called visions. It was what he saw with the eyes of his mind, and foresaw as clearly by divine revelation, was as well assured of it, as fully apprised of it, and as much affected with it, as if he had seen it with his bodily eyes. Note 1. God's prophets saw what they spoke of, knew what they said, and require our belief of nothing but what they themselves believed and were sure of, John vi. 69; 1 John i. 1. 2. They could not but speak what they saw, because they saw how much all about them were concerned in it, Acts iv. 20; 2 Cor. iv. 13.