The explanation is too plain to be mistaken, but we may briefly touch its main features. Notice, then, that our Lord begins with the case in which there is least contact between His word and the soul, and that, as the contact is least in degree, so it is shortest in duration. A minute or two finishes it. Notice especially that the path has been made hard by external pressure. It is not rock, but soil like the other parts of the field. It represents the case of men whose insensibility to the word is caused by outward things having made a thoroughfare of their natures, and trodden them into incapacity to receive the message of Christ's love. The heavy baggage-wagons of commerce, the light cars of pleasure, merry dancers, and sad funeral processions, have all used that way, and each footfall has beaten the once loose soil a little firmer. We are made insensitive to the gospel by the effect of innocent and necessary things, unless we take care to plough up the path along which they travel, and to keep our spirits susceptible by a distinct effort. How many hearers of every teacher are there, who never take in his words at all, simply because they are so completely preoccupied! Notice what becomes of the seed that lies thus bare. 'Immediately,' says Mark, 'Satan cometh.' His agents are these light-winged thoughts that flutter round the hearer as soon as the sermon or the lesson is over. Talk of the weather, criticism of the congregation, or of the sower's attitude as he flung the seed, or politics, or business, drive away the remembrance of even the text, before many of our hearers are out of sight of the church. Then the whirl of traffic begins again, and the path is soon beaten a little harder. If the seed had got ever so little way into the ground, the sharp beaks of the thieves would not have carried it off so easily. Impressions so slight as Christ's word makes on busy men are quickly rubbed out. But if the seed sown vanishes thus swiftly, the fault is not in it, but in ourselves. Satan may seek to snatch it away, but we can hinder him. Our Lord uses a singular expression, 'This is he that was sown by the way side,' which appears to identify the man with the seed rather than with the soil. It has been suggested by some commentators that this expression is to be regarded as conveying the truth that the seed sown in the heart and growing up there becomes the life-spring of the individual, and that therefore we may speak of him or of it as bearing the fruit. But this explanation will not avail for the case where there is no entrance of the word into the heart, and so no new birth by the word. More probably we are to regard the expression simply as a conversational shorthand form of speech, not strictly accurate, but quite intelligible.