John Chrysostom
And in this way it may be the same in the three Evangelists, Matthew, Mark, and Luke. And not without good reason does the Evangelist mention Simon’s leprosy, to shew what gave this woman confidence to come to Christ. The leprosy was an unclean disease; when then she saw that Jesus had healed the man with whom He now lodged, she trusted that He could also cleanse the uncleanness of her soul; and so whereas other women came to Christ to be healed in their bodies, she came only for the honour and the healing of her soul, having nothing diseased in her body; and for this she is worthy our highest admiration. But she in John is a different woman, the wonderful sister of Lazarus.
The disciples had heard their Master say, I will have mercy, and not sacrifice, (Matt. 9:13.) wherefore they thought among themselves, If He accepts not burnt-offerings, much less will He the application of such ointment as this.
The disciples then thought thus, but Jesus, who saw the thoughts of the woman, suffered it. For her piety was great, and her ardour unspeakable, wherefore He condescended to suffer her to pour the ointment on His head. As the Father admitted the smoke and odour of the slain victim, so also Christ admitted this votive anointing of His head, though the disciples, who saw not her heart, murmured.
And He says not merely, She hath wrought a good work, but says first, Why trouble ye the woman? to teach us that every good act that is wrought by any, even though it lack somewhat of exact propriety, yet we ought to receive, cherish, and cultivate it, and not to require strict correctness in a beginner. If He had been asked before this was done by the woman, He would not have directed its doing; but when it was done, the rebuke of the disciples had no longer any place, and He Himself to guard the woman from importunate attacks speaks these things for her comfort.
Behold the accomplishment of this saying; to whatsoever part of the world you go, you will find this woman famous, and this has been wrought by the power of Him who spake this word. How many victories of kings and captains have passed into oblivion; how many who built cities and enslaved many nations are now known neither by report nor by name; but the deed of this woman pouring forth ointment in the house of a leper in the presence of twelve men, this resoimds throughout the world, and though so much time has elapsed, the memory of that which was done is not effaced. But why promised He no spiritual gift to this woman, but everlasting remembrance only? Because this He did promise made her confident of receiving the other also; whereas she wrought a good work, it is clear that she shall receive an adequate reward.
That this mention of His death and burial might not cause her to despond, He comforts her by what follows, Verily I say unto you, Wheresoever &c.