Matthew 27:28 - Ellicott's Commentary On The Whole Bible

A scarlet robe. — Here again we have a technical word, the chlamys or paludamentum, used for the military cloak worn by emperors in their character as generals, and by other officers of high rank (Pliny, xxii. 2, 3). St. Mark and St. John call it purple (Mark 15:17; John 19:2); but the “purple “of the ancients was “crimson,” and the same colour might easily be called by either name. It was probably some cast-off cloak of Pilate’s own, or, possibly, that in which Herod had before arrayed Him (Luke 23:11). Philo records a like mockery as practised upon an idiot at Alexandria, who was there made to represent Herod Agrippa II. (in Flacc. p. 980). It was but too common a practice to subject condemned prisoners before execution to this kind of outrage. Here the point of the mockery lay, of course, in the fact that their Victim had been condemned as claiming the title of a King. They had probably seen or heard of the insults of like kind offered by Herod and his soldiers (Luke 23:21), and now reproduced them with aggravated cruelty.