Jerome — as excerpted in the Catena Aurea on Matthew 27:27-30

“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.”