This was not Peter's first acquaintance with Jesus Christ, nor his first enrolment in the ranks of disciples. John's Gospel tells the very beginning, and how, long before this incident, he had recognised Jesus Christ to be the King of Israel. This was not his first experience of a miracle. There had been many wrought in Capernaum of which probably he was an observer; and he had been at the wedding of Cana of Galilee; and in many ways and at many times, no doubt had seen manifestations of our Lord's supernatural power. But here, in his own boat, with his own nets, about his own sort of work, the thing came home to him as it never had come home before. And although he had long ago recognised Jesus Christ as the Messiah, there is a new, tremulous accession of conviction in that 'O Lord!' It means more than 'Master,' as he had just called Jesus. It means more than he knew himself, no doubt, but it means at least a great, sudden illumination as to who and what Christ was. And so the consciousness of sin flashes upon him at once, as a consequence of that new vision of the divine, as manifested in Jesus Christ. The links of the process of thought are suppressed. We only see the two ends of it. He passed through a series of thoughts with lightning rapidity. The beginning was the recognition of Christ as in some sense the manifestation to him of the Divine Presence, and the end of it was the recognition of his own sinfulness. He had no new facts; but new meaning and vitality were given to the facts that had long been familiar to him. The first result of this was a new conviction of his own hollowness and evil; and then, side by side with that sense of demerit and sin, came this other trembling apprehension of personal consequences. And so, not thinking so much about the sin as about the punishment that he thought must necessarily come when the holy and the impure collided, he cried, 'Depart from me, for I am a sinful man, O Lord!' Now I take it that you get there, in that one instance, packed into small and picturesque compass, just the outlines of what it is reasonable and right that there should always go on in a heart when it first catches a glimpse of the purity, and holiness, and nearness of God, and of the awful, solemn verity that we do, each of us for himself, stand in a living, personal relation to Him. That sudden conviction may come by a thousand causes. A sunset opening the gates to the infinite distance may do it. A chance word may do it. A phrase in a sermon may do it. Some personal sorrow or sickness may do it. Any accidental push may touch the spring, and then the door flies open, for we all of us carry, buried deep down in most of us, and not easily got at, that hidden conviction, only needing the letting in of air to flame up, that we have indeed to do with a living God; that we are sinful and He is pure, and that, that being the case, the discord between us, if we come to close quarters, must end disastrously for us.