Luke 17:1

Because the Pharisees were covetous and railed against Christ when He preached poverty, He put to them the parable of the rich man and Lazarus. Afterwards, in speaking with His disciples concerning the Pharisees, He declares them to be men who caused division, and placed obstacles in the divine way. As it follows: Then said he to his disciples, It is impossible but that offenses will come, that is, hindrances to a good life and which is pleasing to God.

Now there are two kinds of offenses, of which the one resist the glory of God, but the other serve only to cause a stumbling-block to the brethren. For the inventions of heresies, and every word that is spoken against the truth, are obstructions to the glory of God. Such offenses however do not seem to be mentioned here, but rather those which occur between friends and brethren, as strifes, slanders, and the like. Therefore He adds afterwards, If your brother trespass against you, rebuke him.

Or, He says that there must arise many obstacles to preaching and to the truth, as the Pharisees hindered the preaching of Christ. But some ask, If it needs be that offenses should come, why does our Lord rebuke the author of the offenses? for it follows, But woe to him through when they came. For whatsoever necessity engenders is pardonable, or deserving of pardon. But observe, that necessity itself derives its birth from free-will. For our Lord, seeing how men cling to evil, and put forward nothing good, spoke with reference to the consequence of those things which are seen, that offenses must needs come; just as if a physician, seeing a man using an unwholesome diet, should say, It is impossible but that such a one should be sick. And therefore to him that causes offenses He denounces woe, and threatens punishment, saying, It were better for him that a mill-stone were hanged about his neck, and he cast into the sea, &c.

This is spoken according to the custom of the province of Palestine; for among the ancient Jews the punishment of those who were guilty of the greater crimes was that they should be sunk into the deep with a stone tied to them; and in truth it were better for a guilty man to finish his bodily life by a punishment however barbarous, yet temporal, than for his innocent brother to deserve the eternal death of his soul. Now he who can be offended is rightly called a little one; for he who is great, whatsoever he is witness of; and how great soever his sufferings, swerves not from the faith. As far then as we can without sin, we ought to avoid giving offense to our neighbors. But if an offense is taken at the truth, it is better to let the offense be, than that truth should be abandoned.

But by the punishment of the man who offends, learn the reward of him who saves. For had not the salvation of one soul been of such exceeding care to Christ, he would not threaten with such a punishment the offender.

Then, turning to His disciples, He says: “Woe unto him through whom offences come! It were better for him if he had not been born, or if a millstone were hanged about his neck and he were cast into the sea, than that he should offend one of these little ones,” that is, one of His disciples. Judge, then, what the sort of punishment is which He so severely threatens. For it is no stranger who is to avenge the offence done to His disciples. Recognise also in Him the Judge, and one too, who expresses Himself on the safety of His followers with the same tenderness as that which the Creator long ago exhibited: “He that toucheth you toucheth the apple of my eye.” Such identity of care proceeds from one and the same Being. A trespassing brother He will have rebuked. …

But how is this possible? he may say. For if “it must needs be that offenses come,” how is it possible to escape these? Because that the offenses come indeed must needs be, but that men should perish is not altogether of necessity. Like as though a physician should say (for nothing hinders our using the same illustration again), it must needs be that this disease should come on, but it is not a necessary consequence that he who gives heed should be of course destroyed by the disease. And this He said, as I mentioned, to awaken together with the others His disciples. For that they may not slumber, as sent unto peace and unto untroubled life, He shows many wars close upon them, from without, from within. …

xvii. 1 . It is impossible but that occasions of stumbling should come.