The first point to note in regard to it is its scene. It is of subordinate importance, but it can scarcely have been entirely unmeaning, that the flashing waters of the Mediterranean, blazing in midday sunshine, stretched before Peter's eyes as he sat on the housetop 'by the seaside.' His thoughts may have travelled across the sea, and he may have wondered what lay beyond the horizon, and whether there were men there to whom Christ's commission extended. 'The isles' of which prophecy had told that they should 'wait for His law' were away out in the mysterious distance. Some expansion of spirit towards regions beyond may have accompanied his gaze. At all events, it was by the shore of the great highway of nations and of truth that the vision which revealed that all men were 'cleansed' filled the eye and heart of the Apostle, and told him that, in his calling as 'fisher of men,' a wider water than the land-locked Sea of Galilee was his. We may also note the connection of the form of the vision with his circumstances. His hunger determined its shape. The natural bodily sensations coloured his state of mind even in trance, and afforded the point of contact for God's message. It does not follow that the vision was only the consequence of his hunger, as has been suggested by critics who wish to get rid of the supernatural. But the form which it took teaches us how mercifully God is wont to mould His communications according to our needs, and how wisely He shapes them, so as to find entrance through even the lower wants. The commonest bodily needs may become avenues for His truth, if our prayer accompanies our hunger. The significance of the vision is plain to us, though Peter was 'much perplexed' about it. In the light of the event, we understand that the 'great sheet let down from heaven by four corners,' and containing all manner of creatures, is the symbol of universal humanity (to use modern language). The four corners correspond to the four points of the compass,--north, south, east, and west,--the contents to the swarming millions of men. Peter would perceive no more in the command to 'kill and eat' than the abrogation of Mosaic restrictions. Meditation was needful to disclose the full extent of the revolution shadowed by the vision and its accompanying words. The old nature of Peter was not so completely changed but that a flash of it breaks out still. The same self-confidence which had led him to 'rebuke' Jesus, and to say, 'This shall not be unto Thee,' speaks in his unhesitating and irreverent 'Not so, Lord!'