Theophylact of Ohrid
Catena Aurea · Markusevangelium 14
And being in Bethany in the house of Simon the leper, as he sat at meat, there came a woman having an alabaster box of ointment of spikenard very precious; and she brake the box, and poured it on his head. And there were some that had indignation within themselves, and said, Why was this waste of the ointment made? For it might have been sold for more than three hundred pence, and have been given to the poor. And they murmured against her. And Jesus said, Let her alone; why trouble ye her? she hath wrought a good work on me. For ye have the poor with you always, and whensoever ye will ye may do them good: but me ye have not always. She hath done what she could: she is come aforehand to anoint my body to the burying. Verily I say unto, Wheresoever this Gospel shall be preached throughout the whole world, this also that she hath done shall be spoken of for a memorial of her.
Or else, it appears to be aptly implied that many disciples murmured against the woman, because they had often heard our Lord talking of alms. Judas, however, was indignant, but not with the same feeling, but on account of his love of money, and filthy gain; wherefore John also records him alone, as accusing the woman with a fraudulent intent. But he says, They murmured against her, meaning that they troubled her with reproaches, and hard words. Then our Lord reproves His disciples, for throwing obstacles against the wish of the woman. Wherefore it goes on: And Jesus said, Let her alone, why trouble ye her? For after she had brought her gift, they wished to prevent her purpose by their reproaches.