Or, it is to be explained by supposing this spoken to Judas only; and He said not, Ye have not, but “Ye shall not have,” because this was spoken in the person of Judas to all his followers. And He says, “Not always,” though they have it at no time, because the wicked seem to have Christ in this present world, while they mix among His members and approach His table, but they shall not always so have Him when He shall say to His elect, “Come, ye blessed of my Father.” [Matt 25:34]
It was the custom among this people to embalm the bodies of the dead with divers spices, to the end that they might be kept from corruption as long as possible. And as this woman was desirous of embalming the Lord’s dead Body, and would not be able because she would be anticipated by His resurrection, it was therefore arranged by Divine Providence that she should anoint the Lord’s living Body. This then is what He says, “In that she hath poured,” that is, By anointing My living Body she shews forth My death and burial.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).