The gleam and purity of lofty spiritual ideas are soon darkened, as a film forms on quicksilver after short exposure. John's contemporaries thought that the kingdom of heaven meant exclusive privileges, and their rule over the heathen. They had all but lost the thought that it meant first God's rule over their wills, and their harmony with the glad obedience of heaven. They had to be rudely shaken out of their self-complacency and taught that the livery of the King was purity, and the preparation for His coming, penitence. The next touch in this outline sketch is John's fulfilment of prophecy. Matthew probably knew that wonderfully touching and lowly answer of his to the deputation from the ecclesiastical authorities, which at once claimed prophetic authority and disclaimed personal importance, 'I am the voice of one crying in the wilderness.' The prophecy in its original application refers to the preparation of a path in the desert, for Jehovah coming to redeem His people from captivity. The use made of it by Matthew, and endorsed by all the evangelists, rests on the principle, without which we have no clue to the significance of the Old Testament, that the history of Israel is prophetic, and that the bondage and deliverance are types of the sorer captivity from which Christ redeems, and of the grander deliverance which He effects. Our evangelist gives a vivid picture of the asceticism of John, which was one secret, as our Lord pointed out, of his hold on the people. The more luxuriously self-indulgent men are, the more are they fascinated by religious self-denial. A man 'clothed in soft raiment' would have drawn no crowds. A religious teacher must be clearly free from sensual appetites and love of ease, if he is to stir the multitude. John's rough garb and coarse food were not assumed by him to create an impression. He was no mere imitator of the old prophets, though he wore a robe like Elijah's. His asceticism was the expression of his severe, solitary spirit, detached from the delights of sense, and even from the softer play of loves, because the coming kingdom flamed ever before him, and the age seemed to him to be rotting and ready for the fire. There is no need to bring in irrelevant learning about Essenes to account for his mode of life. The thoughts which burned in him drove him into the wilderness. He who was possessed with them could not 'come eating and drinking,' and might well seem to sense-bound wonderers as if some demonic force, other than ordinary motives, tyrannised over him.