Rabanus Maurus

But it is to be noted, that this entry of His into Jerusalem was five days before the passover. For John relates, that six days before the Passover He came to Bethany, and on the morrow sitting on the ass entered Jerusalem. (John 12:1.) In this observe the correspondence between the Old and New Testaments, not only in things but in seasons. For on the tenth day of the first month, the lamb that was to be sacrificed for the passover was to be taken into the house, (Exod. 12:3.) because on the same day of the same month, that is, five days before the passover, the Lord was to enter the city in which He was to suffer.