Matthew 13:29

What then doth the Master? He forbids them, saying, "Lest haply ye root up the wheat with them." And this He said, to hinder wars from arising, and blood and slaughter. For it is not right to put a heretic to death, since an implacable war would be brought into the world. By these two reasons then He restrains them; one, that the wheat be not hurt; another, that punishment will surely overtake them, if incurably diseased. Wherefore, if thou wouldest have them punished, yet without harm to the wheat, I bid thee wait for the proper season. But what means, "Lest ye root up the wheat with them?" Either He means this, If ye are to take up arms, and to kill the heretics, many of the saints also must needs be overthrown with them; or that of the very tares it is likely that many may change and become wheat. If therefore ye root them up beforehand, ye injure that which is to become wheat, slaying some, in whom there is yet room for change and improvement. He doth not therefore forbid our checking heretics, and stopping their mouths, and taking away their freedom of speech, and breaking up their assemblies and confederacies, but our killing and slaying them. But mark thou His gentleness, how He not only gives sentence and forbids, but sets down reasons.

For room for repentance is left, and we are warned that we should not hastily cut off a brother, since one who is to-day corrupted with an erroneous dogma, may grow wiser tomorrow, and begin to defend the truth; wherefore it is added, Lest in gathering together the tares ye root out the wheat also.

But this seems to contradict that command, Put away the evil from among you. (1 Cor. 5:13) For if the rooting up be forbidden, and we are to abide in patience till the harvest-time, how are we to cast forth any from among us? But between wheat and tares (which in Latin we call 'lolium') so long as it is only in blade, before the stalk has put forth an ear, there is very great resemblance, and none or little difference to distinguish them by. The Lord then warns us not to pass a hasty sentence on an ambiguous word, but to reserve it for His judgment, that when the day of judgment shall come, He may cast forth from the assembly of the saints no longer on suspicion but on manifest guilt.

(Quaest. in Matt. q. 12.) Wherein He renders them more patient and tranquil. For this He says, because good men while yet weak, have need in some things of being mixed up with bad, either that they may be proved by their means, or that by comparison with them they may be greatly stimulated and drawn to a better course. Or perhaps the wheat is declared to be rooted up if the tares should be gathered out of it, on account of many who though at first tares would, after become wheat; yet they would never attain to this commendable change were they not patiently endured while they were evil. Thus were they rooted up, that wheat which they would become in time if spared, would be rooted up in them. It is then therefore He forbids that such should be taken away out of this life, lest in the endeavour to destroy the wicked, those of them should be destroyed among the rest who would turn out good; and lest also that benefit should be lost to the good which would accrue to them even against their will from mixing with the wicked. But this may be done seasonably when, in the end of all, there remains no more time for a change of life, or of advancing to the truth by taking opportunity and comparison of others' faults; therefore He adds, Let both grow together until the harvest, that is, until the judgment. (Cont. Ep. Parm. iii. 2.) For when any one of the number of Christians included in the Church is found in such sin as to incur an anathema, this is done, where danger of schism is not apprehended, with tenderness, not for his rooting out, but for his correction. But if he be not conscious of his sin, nor correct it by penitence, he will of his own choice go forth of the Church and be separated from her communion; whence when the Lord commanded, Suffer both to grow together till the harvest, He added the reason, saying, Lest when ye would gather out the tares ye root up the wheat also. This sufficiently shows, that when that fear has ceased, and when the safety of the crop is certain, that is, when the crime is known to all, and is acknowledged as so execrable as to have no defenders, or not such as might cause any fear of a schism, then severity of discipline does not sleep, and its correction of error is so much the more efficacious as the observance of love had been more careful. But when the same infection has spread to a large number at once, nothing remains but sorrow and groans. Therefore let a man gently reprove whatever is in his power; what is not so let him bear with patience, and mourn over with affection, until He from above shall correct and heal, and let him defer till harvest-time to root out the tares and winnow the chaff. But the multitude of the unrighteous is to be struck at with a general reproof, whenever there is opportunity of saying aught among the people; and above all when any scourge of the Lord from above gives opportunity, when they feel that they are scourged for their deserts; for then the calamity of the hearers opens their ears submissively to the words of their reprover, seeing the heart in affliction is ever more prone to the groans of confession than to the murmurs of resistance. And even when no tribulation lays upon them, should occasion serve, a word of reproof is usefully spent upon the multitude; for when separated it is wont to be fierce, when in a body it is wont to mourn. (Ep. 93. 17.) This indeed was at first my own opinion, that no man was to be driven by force into the unity of Christ; but he was to be led by discourse, contended with in controversy, and overcome by argument, that we might not have men feigning themselves to be Catholics whom we knew to be declared heretics. But this opinion of mine was overcome not by the authority of those who contradicted me, but by the examples of those that showed it in fact; for the tenor of those laws in enacting which Princes serve the Lord in fear, has had such good effect, that already some say, This we desired long ago; but now thanks be to God

And it should be noted that, when He says, Sowed good seed, He intends that good will which is in the elect; when He adds, An enemy came, He intimates that watch should be kept against him; when as the tares grow up, He suffers it patiently, saying, An enemy hath done this, He recommends to us patience; when He says, Lest haply in gathering the tares, &c. He sets us an example of discretion; when He says, Suffer both to grow together till the harvest, He teaches us long-suffering; and, lastly, He inculcates justice, when He says, Bind them into bundles to burn.