Hilary of Poitiers — as excerpted in the Catena Aurea on Matthew 27:27-30

“Or otherwise; The Lord having taken upon Him all the infirmities of our body, is then covered with the scarlet coloured blood of all the martyrs, to whom is due the kingdom with Him; He is crowned with thorns, that is, with the sins of the Gentiles who once pierced Him, for there is a prick in thorns of which is woven the crown of victory for Christ. In the reed, He takes into His hand and supports the weakness and frailty of the Gentiles; and His head is smitten therewith that the weakness of the Gentiles sustained by Christ’s hand may rest on God the Father, who is His head.”