It may appear to be a contradiction, that Matthew and Mark after mentioning “two days” and “the Passover”, and afterwards that Jesus was in Bethany, where that precious ointment is mentioned; whilst John, just before he speaks of the anointing, says, that Jesus came into Bethany six days before the feast. [John 12:1] But those persons who are troubled by this, are not aware that Matthew and Mark do not place that anointing in Bethany immediately after that two days of which he foretold, but by way of recapitulation at the time when there were yet six days to the Passover.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: de Con. Evan. ii, 78