Their burden is, "Holy, holy, holy is the Lord of hosts; the whole earth is full of His glory." That is, they are celebrating the two attributes of the Divine character which always most impressed a Jewish mind--His holiness and His omnipotence. The one is God as He is in Himself, turned inwards, so to speak. He is absolutely holy, unapproachable, a consuming fire scorching away impurity, falsehood, and sin of every kind. The other is God as He is in the world, turned outwards, so to speak; the world's fulness--suns and systems, mountains and oceans, earthquake and storm, summer's abundance and winter's terror--all this is His glory, the garment by which He makes Himself visible.[9] The voices swell till the temple rocks, or seems to rock to the reeling senses of the prophet, and the house is filled with smoke, or seems to be so, as a mist envelops the swooning spirit of the spectator. But still, through the mist, there peal, falling like the strokes of a hammer on the listening heart, the notes of the dread song, "Holy, holy, holy." 2. Next ensued a Vision of Sin. The vision of God could not but unseal a rushing stream of feeling of some kind in Isaiah. But of what kind would it be? Surely of joyful adoration: the soul, inspired with the sublimity of these sights and thrilled with these sounds, will rise to the majesty of the occasion, and the human voice will strike in with all its force among the angelic voices, crying, "Holy, holy, holy." So one might have expected. But the human mind is a strange thing; and it is difficult to know where and how to touch its delicate and complex mechanism so as to produce any desired effect. You wish to produce a flow of tender feeling, and you tell a pathetic tale, which ought, you think, to move the heart. But at every sentence the features of the listeners harden into more and more rigidity, or even relax into mocking laughter; whereas the suggestion of a noble thought, which seems to have nothing to do with pathos, may instantaneously melt the soul and unseal the fountain of tears. Or is it the conscience which is to be affected? The clumsy operator begins to assail it straight with denunciations of sin, but, instead of producing penitence, he only rouses the whole man into proud and angry self-defence; whereas a single touch, no heavier than an infant's finger, applied away up somewhere, remote from conscience, in the region of the imagination, may send an electric shock down through the whole being and shake the conscience from centre to circumference.