John wishes it to be distinctly understood that he is not that Light which the prophets of old have told them should arise, but is sent to bear witness to that Light. He has come as a herald to announce the approach of the King, and to call upon the people to prepare for His coming. Think not of me, he cries, ask not who I am; think of the coming King, and make ready for Him,--"Prepare ye the way of the Lord, make _His_ paths straight."
How is the way of the Lord to be prepared? Is it by summoning the people to arms all over the land, that they may repel the Roman invader and restore the ancient kingdom? Such a proclamation would no doubt have struck a chord that would have vibrated through all the land. That would have been after the manner of men; it was not the way of the Lord. The summons must be, not to arms, but to _repentance_: "Wash you, make you clean: put away the evil of your doings." So, instead of marching up, a host of warriors, to the Roman citadel, the people troop down, band after band of penitents, to the Jordan, confessing their sins. After all it is the old, old prophetic message over again,--the same which had been sent generation after generation to a backsliding people, its burden always this: "Turn ye unto Me, saith the Lord of Hosts, and I will turn unto you, saith the Lord of Hosts."
Like many of the old prophets, John taught by symbol as well as by word. The preparation needed was an inward cleansing, and what more fitting symbol of it than the water baptism to which he called the nation? "In that day," it was written in the prophets, "there shall be a fountain opened to the house of David and to the inhabitants of Jerusalem, for sin and for uncleanness." The prophecy was about to be fulfilled, and the baptism of John was the appropriate sign of it. Again, in another of the prophets the promise ran, "Then will I sprinkle clean water upon you, and ye shall be clean; from all your filthiness and from all your idols will I cleanse you ... and I will put my spirit within you." John knew well that it was not given to him to _fulfil_ this promise. He could not grant the real baptism, the baptism of the Holy Ghost; but he could baptise with water; he could give the sign and assurance to the truly penitent heart that there was forgiveness and cleansing in the coming One; and thus, by his baptism with water, as well as by the message he delivered, he was preparing the way of the Lord. All this, we cannot but observe, was in perfect accord with the wonderful prophetic utterance of his father Zacharias, as recorded by St. Luke: "Thou, child, shalt be called the prophet of the Highest: for thou shalt go before the face of the Lord to prepare His ways; to give knowledge of salvation unto His people by the remission of their sins,"--not to give salvation, which only Christ can give, but the knowledge of it. This he did not only by telling of the coming Saviour, and, when He came, pointing to Him as "the Lamb of God that taketh away the sin of the world;" but also by the appropriate sign of baptism, which gave the same knowledge in the language of symbol addressed to the eye.
The summons of the prophet of the wilderness is not in vain. The people come. The throngs increase. The nation is moved. Even the great ones of the nation condescend to follow the multitude. Pharisees and Sadducees, the leaders of the two great parties in Church and State, are coming; many of them are coming. What a comfort this must be to the prophet's soul. How gladly he will welcome them, and let it be known that he has among his converts many of the great ones of the land! But the stern Baptist is a man of no such mould. What cares he for rank or position or worldly influence? What he wants is reality, simplicity, godly sincerity; and he knows that, scarce as these virtues are in the community at large, they are scarcest of all among these dignitaries. He will not allow the smallest admixture of insincerity or hypocrisy in what is, so far, a manifest work of God. He must test these new-comers to the uttermost, for the sin of which they need most to repent is the very sin which they are in danger of committing afresh in its most aggravated form in offering themselves for baptism. He must therefore test their motives; he must at all risks ensure that, unless their repentance is genuine, they shall not be baptised. For their own sakes, as well as for the work's sake this is necessary. Hence the strong, even harsh language he uses in putting the question _why_ they had come. Yet he would not repel or discourage them. He does not send them away as if past redemption, but only demands that they bring forth fruit worthy of the repentance they profess. And lest they should think that there was an easier way of entrance for them than for others, lest they should think that they had claims sufficient because of their descent, he reminds them that God can have his kingdom upon earth, even though every son of Abraham in the world should reject Him: "Think not to say within yourselves, We have Abraham to our father: for I say unto you, that God is able of these stones to raise up children unto Abraham."