Jerome
Catena Aurea · Matthäusevangelium 27
Then the soldiers of the governor took Jesus into the common hall, and gathered unto him the whole band of soldiers. And they stripped him, and put on him a scarlet robe. And when they had platted a crown of thorns, they put it upon his head, and a reed in his right hand: and they bowed the knee before him, and mocked him, saying, Hail, king of the Jews! And they spit upon him, and took the reed, and smote him on the head.
He had been styled King of the Jews, and the Scribes and Priests had brought this charge against Him, that He claimed sovereignty over the Jewish nation; hence this mockery of the soldiers, taking away His own garments, they put on Him a scarlet cloak to represent that purple fringe which kings of old used to wear, for the diadem they put on Him a crown of thorns, and for the regal sceptre give Him a reed, and perform adoration to Him as to a king.