There is variety in the degree of fruitfulness, according to the goodness of the soil; that is to say, according to the thoroughness and depth of the reception of the word. The great Husbandman does not demand uniform fertility. He is glad when He gets an hundredfold, but He accepts sixty, and does not refuse thirty, only He arranges them in descending order, as if He would fain have the highest rate from all the plants, and, not without disappointment, gradually stretches His merciful allowance to take in even the lowest. He will accept the scantiest fruitage, and will lovingly 'purge' the branch 'that it may bring forth more fruit.'
No parable teaches everything. Paths, rocks, and thorns cannot change. But men can plough up the trodden ways, and blast away the rock, and root out the thorns, and, with God's help, can open the door of their hearts, that the Sower and His seed may enter in. We are responsible for the nature of the soil, else His warning were vain, 'Take heed, therefore, how ye hear.'
'Who hath ears to hear, let him hear.--MATT. xiii. 8.
This saying was frequently on our Lord's lips, and that in very various connections. He sometimes, as in the instance before us, appended it to teaching which, from its parabolic form, required attention to disentangle the spiritual truth implied. He sometimes used it to commend some strange, new revolutionary teaching to men's investigation--as, for instance, after that great declaration of the nullity of ceremonial worship, how that nothing could defile a man except what came from his heart. In other connections, which I need not now enumerate, we find it. Like printing a sentence in italics, or underscoring it, this saying calls special attention to the thing uttered. It is interesting to notice that our Lord, like the rest of us, had to use such means of riveting and sharpening the attention of His hearers. There is also a striking reappearance of the expression in the last book of Scripture. The Christ who speaks to the seven churches, from the heavens, repeats His old word spoken on earth, and at the end of each of the letters says once more, as if even the Voice that spoke from heaven might be listened to listlessly, 'He that hath an ear, let him hear what the Spirit saith to the churches.'
