The vision which Isaiah saw when he was, as is said of Samuel, established to be a prophet of the Lord (1 Sam. iii. 20), was intended, 1. To confirm his faith, that he might himself be abundantly satisfied of the truth of those things which should afterwards be made known to him. This God opened the communications of himself to him; but such visions needed not to be afterwards repeated upon every revelation. Thus God appeared at first as a God of glory to Abraham (Acts vii. 2), and to Moses, Exod. iii. 2. Ezekiel's prophecies and St. John's, begin with visions of the divine glory. 2. To work upon his affections, that he might be possessed with such a reverence of God as would both quicken him and fix him to his service. Those who are to teach others the knowledge of God ought to be well acquainted with him themselves.