The _good soil_ is marked by characteristics which are simply the negatives of these: it is not hard, so the seed enters; not shallow, so it takes root; not preoccupied, so it holds the ground, and springs up and brings forth fruit, "in some thirty, in some sixty, in some a hundredfold."
There are, however, other obstacles than those found in the nature of the soil. There is the diligence of the enemy, and the impossibility of getting rid of those who have come under his influence, as set forth in the second parable, that of "The Tares of the Field." In this parable the good seed is no longer the word, but "the children of the kingdom"; as if to suggest that Christians themselves are to be to the world what the word has been to them; while the bad seed--sown when men sleep, sown when Christians are asleep--does not remain as mere seed, but embodies itself in "children of the wicked one," who take their places side by side with the true children of the kingdom, and whom it is so difficult to distinguish from them, that the separation may not be attempted till the time of the harvest, when it shall be complete and final, and "the righteous shall shine forth as the sun in the kingdom of their Father."
The second pair--"The Mustard Seed" and "The Leaven"--set forth the growth of the kingdom notwithstanding the many obstacles it must encounter, the one indicating its growth as recognisable to the observant eye, the other its pervasive power as permeating society. This twofold view of the development of the kingdom is in the same line of thought as the illustrations of the light and the salt in the Sermon on the Mount. The prophecy these parables infold is most marvellous, spoken as it was in a time of so deep discouragement. There is true pathos in the thought of the grain of mustard seed, "_the least of all seeds_," and in the little word "hid," which comes in so significantly in the parable of the Leaven; and there is great strength of faith in the readiness of mind to recognise the hopeful thought of the inherent life and energy hidden in the tiny germ, and working all unseen in the little leaven which literally disappeared in the at first unaltered mass.
The parables of "The Hid Treasure" and "The Pearl" form a third pair, shadowing forth the unsearchable riches of Christ. The reduplication of the thought adds greatly to its impressiveness, and moreover affords the opportunity of suggested variation in the experience of those who find the treasure. The merchantman we naturally think of as representing the rich, and the man finding the treasure in the field as one of the poor in this world's goods. Both alike, however, "buy" their prize at the price of all that they possess, on the principle which underlies all our Lord's teaching as to the way of life: "Whosoever he be of you that forsaketh not all that he hath cannot be My disciple." The one comes upon his treasure unexpectedly; the other finds it in the course of diligent search. Both alike, however, recognise its exceeding value as soon as it is seen; and it is under no constraint, but willingly and gladly--"for joy thereof," as it is put in the case of the man who from his not seeking it might have been thought indifferent to it--that each one sells all that he has and buys it.
The last parable, according to the arrangement we have suggested, stands alone. It is the parable of "The Net," and its subject is the consummation of the Kingdom. Its teaching is indeed to a great extent anticipated in the parable of the tares of the field; but in that parable, though "the end of the world" is pictured in the most impressive imagery, it is not the main thought, as it is here, where the one lesson is, that the present mixed state of things cannot continue for ever, that there must come a time of separation, when those in whose hearts God reigns shall be gathered to a place by themselves, where they shall be satisfied for ever, with their treasure no longer hid, but open in all its immeasurable fulness; while those who refused to allow God to reign in their hearts, and preferred their own selfishness and sin, shall be cast away and consumed, with "wailing and gnashing of teeth."