Matthew 19:11

(Verse 11.) He said to them: Not everyone can understand this word, but only those to whom it is given. No one should think that under this word, either fate or fortune is introduced: these are the virgins to whom it has been given by God, or whom certain circumstances have brought to this, but it has been given to those who have asked, who have desired, who have worked to receive it. For everyone who asks will receive, and the one who seeks will find, and to the one who knocks, it will be opened (Matthew 7:8 and Luke 11:10).

And the Lord said not, It is good, but rather assented that it is not good. However, He considered the weakness of the flesh; But he said unto them, All cannot receive this saying; that is, All are not able to do this. But all cannot obtain it, because all do not desire to obtain it. The prize is before them; he who desires the honour will not consider the toil. None would ever vanquish, if all shunned the struggle. Because then some have fallen from their purpose of continence, we ought not therefore to faint from that virtue; for they that fall in the battle do not slay the rest. That He says therefore, Save they to whom it is given, shows that unless we receive the aid of grace, we have not strength. But this aid of grace is not denied to such as seek it, for the Lord says above, Ask, and ye shall receive.

What then saith Christ? He said not, "yea, it is easier, and so do," lest they should suppose that the thing is a law; but He subjoined, "Not all men receive it, but they to whom it is given," raising the thing, and showing that it is great, and in this way drawing them on, and urging them. But see herein a contradiction. For He indeed saith this is a great thing; but they, that it is easier. For it was meet that both these things should be done, and that it should be at once acknowledged a great thing by Him, that it might render them more forward, and by the things said by themselves it should be shown to be easier, that on this ground too they might the rather choose virginity and continence. And if it is of free choice, one may say, how doth He say, at the beginning, "All men do not receive it, but they to whom it is given?" That thou mightest learn that the conflict is great, not that thou shouldest suspect any compulsory allotments. For it is given to those, even to the willing. But He spake thus to show that much influence from above is needed by him who entereth these lists, whereof He that is willing shall surely partake. For it is customary for Him to use this form of speech when the good work done is great, as when He saith, "To you it is given to know the mysteries." And that this is true, is manifest even from the present instance. For if it be of the gift from above only, and they that live as virgins contribute nothing themselves, for nought did He promise them the kingdom of Heaven, and distinguish them from the other eunuchs.

Concerning chastity, He uttered such sentiments as these: "Whosoever looketh upon a woman to lust after her, hath committed adultery with her already in his heart before God." And, "If thy right eye offend thee, cut it out; for it is better for thee to enter into the kingdom of heaven with one eye, than, having two eyes, to be cast into everlasting fire." And, "Whosoever shall marry her that is divorced from another husband, committeth adultery." And, "There are some who have been made eunuchs of men, and some who were born eunuchs, and some who have made themselves eunuchs for the kingdom of heaven's sake; but all cannot receive this saying." So that all who, by human law, are twice married, are in the eye of our Master sinners, and those who look upon a woman to lust after her. For not only he who in act commits adultery is rejected by Him, but also he who desires to commit adultery: since not only our works, but also our thoughts, are open before God.

Concerning the words, "Not all can receive this saying. There are some eunuchs who were born so, and some who were made eunuchs by men, and some who have made themselves eunuchs for the sake of the kingdom of heaven; let him receive it who can receive it," they do not realize the context. After his word about divorce some asked him whether, if that is the position in relation to woman, it is better not to marry; and it was then that the Lord said: "Not all can receive this saying, but those to whom it is granted." What the questioners wanted to know was whether, when a man's wife has been condemned for fornication, it is allowable for him to marry another.