II. We turn to the exposition of the parable of the sower, or rather of the fourfold soils in which he sows the seed. A sentence at the beginning disposes of the personality of the sower, which in Mark's version does not refer exclusively to Christ, but includes all who carry the word to men. The likening of 'the word' to seed needs no explanation. The tiny, living nucleus of force, which is thrown broadcast, and must sink underground in order to grow, which does grow, and comes to light again in a form which fills the whole field where it is sown, and nourishes life as well as supplies material for another sowing, is the truest symbol of the truth in its working on the spirit. The threefold causes of failure are arranged in progressive order. At every stage of growth there are enemies. The first sowing never gets into the ground at all; the second grows a little, but its greenness soon withers; the third has a longer life, and a yet sadder failure, because a nearer approach to fertility. The types of character represented are unreceptive carelessness, emotional facility of acceptance, and earthly-mindedness, scotched, but not killed, by the word. The dangers which assault, but too successfully, the seed are the personal activity of Satan, opposition from without, and conflicting desires within. On all the soils the seed has been sown by hand; for drills are modern inventions; and sowing broadcast is the only right husbandry in Christ's field with Christ's seed. He is a poor workman, and an unfaithful one, who wants to pick his ground. Sow everywhere; 'Thou canst not tell which shall prosper, whether this or that.' The character of the soil is not irrevocably fixed; but the trodden path may be broken up to softness, and the stony heart changed, and the soul filled with cares and lusts be cleared, and any soil may become good ground. So the seed is to be flung out broadcast; and prayer for seed and soil will often turn the weeping sower into the joyous reaper.
The seed sown on the trodden footpath running across the field never sinks below the surface. It lies there, and has no real contact, nor any chance of growth. It must be in, not on, the ground, if its mysterious power is to be put forth. A pebble is as likely to grow as a seed, if both lie side by side, on the surface. Is not this the description of a mournfully large proportion of hearers of God's truth? It never gets deeper than their ears, or, at the most, effects a shallow lodgment on the surface of their minds. So many feet pass along the path, and beat it into hardness, that the truth has no chance to take root. Habitual indifference to the gospel, masked by an utterly unmeaning and unreal acceptance of it, and by equally habitual decorous attendance on its preaching, is the condition of a dreadfully large proportion of church-goers. Their very familiarity with the truth robs it of all penetrating power. They know all about it, as they suppose; and so they listen to it as they would to the clank of a mill-wheel to which they were accustomed, missing its noise if it stops, and liking to be sent to sleep by its hum. Familiar truth often lies 'bedridden in the dormitory of the soul, beside exploded errors.'
And what comes of this idle hearing, without acceptance or obedience? Truth which is common, and which a man supposes himself to believe, without having ever reflected on it, or let it influence conduct, is sure to die out. If we do not turn our beliefs into practice they will not long be our beliefs. Neglected impressions fade; the seed is only safe when it is buried. There are flocks of hungry, sharp-eyed, quick-flying thieves ready to pounce down on every exposed grain. So Mark uses here again his favourite 'straightway' to express the swift disappearance of the seed. As soon as the preacher's voice is silent, or the book closed, the words are forgotten. The impression of a gliding keel on a smooth lake is not more evanescent.