“And spake of Him.” What spake he? “I saw the Lord sitting upon a high throne” ( Isa. vi. 1 ), and what follows. Therefore he there calleth “glory,” that vision, the smoke, the hearing unutterable Mysteries, the beholding the Seraphim, the lightning which leaped from the throne, against which those powers could not look. “And spake of Him.” What said he? That he heard a voice, saying, “Whom shall I send? who shall go? And I said, Here am I, send me. And He said, Ye shall hear with your ears, and shall not understand, and seeing ye shall see, and not perceive.” ( Isa. vi. 8, 10.) For,