Now, I would notice as to this stage of the process, first, that Isaiah singularly passes beyond all the old ritual in which he had been brought up, and recognises another kind of cleansing than that which it embodied. He had got beyond the ritual to what the ritual meant. We have passed beyond the ritual, too, by another process; and, though I would by no means read full, plain, articulate Christian thought into the vision of Isaiah—which would be an anachronism, and unfaithful to the gradual historical development of the idea and means of redemption—yet I cannot help pointing to the fact that, even although this vision is located as seen in the Temple, there is not a single reference (except that passing allusion to the altar) to the ritual of the Temple, but the cleansing comes in another fashion altogether.
But far more important than that thought is the human condition that is required ere this cleansing can be realised. 'I am a man of unclean lips.' 'I am undone!' It was because that conviction and confession sprang in the prophet's consciousness that the seraph winged his way with the purifying fire in his hands. Which being translated is just this: faith alone will not bring cleansing. There must go with it what we call, in our Christian phraseology, repentance, which is but the recognition of my own antagonism to the holiness of God, and the resolve to turn my back on my own past self. Now, it seems to me that a great deal of what is called, and in a sense is, Evangelical teaching, fails to represent the full counsel of God, in the matter of man's redemption, because it puts a one-sided emphasis on faith, and slurs over the accompanying idea of repentance. And I am here to say that a trust in Jesus Christ, which is unaccompanied by a profound penitent consciousness and abhorrence of one's own sins, and a resolve to turn away from them for the time to come, is not a faith which will bring either pardon or cleansing. We do not need to have less said about trust; we need to have a great deal more said about repentance. You have to learn what it is to say, 'I abhor myself'; you have to learn what it is to say, 'I will turn right round, and leave all that past behind me; and go in the opposite direction'; or the faith which you say you are exercising will neither save nor cleanse your souls nor your lives.
Again, note that we have here set forth most strikingly the other great truth that, side by side, and as closely synchronous as the flash and the peal, as soon as the consciousness of sin and the aversion from it spring in a man's heart, the seraph's wings are set in motion. Remember that beautiful old story in the historical books, of how the erring king, brought to sanity and repentance by Nathan's apologue, put all his acknowledgments in these words, 'I have sinned against the Lord'; and how the confession was not out of his lips, nor had died in its vibration in the atmosphere, before the prophet, with divine authority, replied with equal brevity and completeness, and as if the two sayings were parts of one sentence, 'And the Lord hath made to pass the iniquity of thy sin.' That is all. Simultaneous are the two things. To confess is to be forgiven, and the moment that the consciousness of sin rises in the heart, that moment does the heavenly messenger come to still and soothe.
Still further, notice how the cleansing comes as a divine gift. It is purifying, much more than pardon, that is set forth in the symbolical incident before us. The seraph is the divine messenger, and he brings a coal from the altar, and lays that upon the prophet's lips, which is but the symbolical way of saying that the man who is conscious of his own evil will find in himself a blessed despair of being his own healer, and that he has to turn to the divine source, the vision of which has kindled the consciousness, to find there that which will take away the evil. The Lord is 'He that healeth us.'
But, further, the cleansing is by fire. By which, as I suppose, in the present context, and at Isaiah's stage of religious knowledge and experience, we are to understand that great thought that God burns away our sins, as you put a piece of foul clay into the fire, and the stain melts from the surface like a dissipating cloud as the heat finds its way into the substance. 'He will baptize with the Holy Ghost and with fire'—a fire that quickens. A new impulse will be granted, which will become the life of the sinful man's life, and will emancipate him from the power of his own darkness and evil.
Now, let us remember that we have the fulness of all that was shadowed to the prophet in this vision, and that the reality of every one of these emblems is gathered together—if I may so say—not with confusion, but with abundance and opulence in Jesus Christ Himself. Is He not the seraph? Is He not Himself the burning coal? Is He not the altar from which it is taken? All that is needed to make the foulest clean is given in Christ's great work. Brethren, we shall never understand the deepest secret of Christ and of Christianity until we learn and hold fast by the conviction that the central work of Jesus is to deal with man's sin; and that whatever else Christianity is, it is first and foremost God's way of redeeming the world, and making it possible for the unholy to dwell with His holy self.
III. Lastly, and only a word, the third stage here is—the purged spirit is ready for service.
God did not bid the prophet go on His mission till the prophet had voluntarily accepted the mission. He said, 'Who will go for us?' He wants no pressed men in His army. He does not work with reluctant servants. There is, first, the yielding of the will, and then there is the enduement with the privilege of service. The prophet, having passed through the preceding experiences, had thereby received a quick ear to hear God's calling for volunteers. And we shall not hear Him asking 'Who will go?' unless we have, in our measure, passed through similar experiences. It will be a test of having done so, of our having been purged from our evil, if, when other people think that it is only Eli speaking, we know that it is the Lord that has called us, and say, 'Here am I.'
For such experiences as I have been describing do influence the will, and mould the heart, and make it a delight to do God's commandments, and to execute His purpose, and to be the ministers of His great Word. Some of us are willing to say that we have learned God's holiness; that we have seen and confessed our sins; that we have received pardon and cleansing. Have these experiences made you ready for any service? Have they made your will flexible—made you dethrone yourself, and enthrone the King whom the prophet saw? If they have, they are genuine; if they have not, they are not. Submission of will; glorying in being the instrument of the divine purpose; ears sharpened to catch His lowest whisper; eyes that, like those of a dog fixed on his master, watch for the faintest indication from his guiding eye—these are the infallible tests and signs of having had lips and heart touched with the live coal that burns away our uncleanness.
So, friends, would that I could flash upon every conscience that vision! But you can do so for yourselves. Let me beseech you to bring yourselves honestly into that solemn light of the character of God, and to ask yourselves, 'How can two walk together except they be agreed?' Do not put away such thoughts with any shallow, easy-going talk about how God is good and will not be hard upon a poor fellow that has tried to do his best. God is good; God is love. But divine goodness and love cannot find a way by which the unclean shall dwell with the clean. What then? This then—Jesus Christ has come. We may be made clean if we trust in Him, and forsake our sins. He will touch the heart and lips with the fire of His own Spirit, and then it will be possible to dwell with the everlasting burnings of that flaming fire which is a holy God. Blessed are they that have seen the vision; blessed they that have felt it disclosing their own sins; blessed they whose hearts have been purged. Blessed most of all they who, educated and trained through these experiences, have taken this as the motto of their lives, 'Here am I; send me.'