The seraphs sang 'Holy! Holy! Holy!' but they, and all the hosts of heaven, learn a new song from the experience of earth, and redeemed men are the chorus-leaders of the perfected and eternal worship of the heavens. For we read that it is the four-and-twenty elders who begin the song and sing to the Lamb that redeemed them by His blood, and that the living creatures and all the hosts of the angels to that song can but say 'Amen!' THE MAKING OF A PROPHET 'Then said I, Woe is me! for I am undone; because I am a man of unclean lips, and I dwell in the midst of a people of unclean lips: for mine eyes have seen the King, the Lord of hosts.'--ISAIAH vi. 5. In previous pages we have seen how Isaiah's vision of Jehovah throned in the Temple, 'high and lifted up,' derived significance from the time of its occurrence. It was 'in the year that' the earthly King 'died' that the heavenly King was revealed. The passing of the transient prepared the way for the revelation of the Eternal, and the revelation of the Eternal more than compensated for the passing of the transient. But strengthening and calming as these thoughts are, they by no means exhaust the purpose of the vision, nor do they describe all its effects on the recipient. These were, first and immediately, the consciousness of unworthiness and sin, expressed in the words that I have taken for my text. Then came the touch of the 'live coal from the altar,' laid on the unclean lips by the seraph; and on that followed willing surrender for a perilous service. These three stages flowing from the vision of God, recognition of sin, experience of purging, abandonment to obedience and service, must be repeated in us all, if we are to live worthy lives. There may be much that is beautiful and elevating and noble without these; but unless in some measure we pass through the prophet's experience, we shall fail to reach the highest possibilities of beauty and of service that open before us. So I wish to consider, very simply, these three stages in my remarks now. I. If we see _God_ we shall see our _sin_. There came on the prophet, as in a flash, the two convictions, one which he learned from the song of the seraphs, ringing in music through the Temple, and one which rose up, like an answering note from the voice of conscience within. They sang 'Holy! holy! holy! Lord God Almighty.' And what was the response to that, in the prophet's heart?--'I am unclean.' Each major note has a corresponding minor, and the triumphant doxology of the seraph wakes in the hearer's conscience the lowly confession of personal unlikeness to the holiness of God. It was not joy that sprang in Isaiah's heart when he saw the throned King, and heard the proclamation of His name. It was not reverence merely that bowed his head in the dust, but it was the awakened consciousness, 'Thou art holy; and now that I understand, in some measure, what Thy holiness means, I look on myself and I say, "unclean! unclean!"'