Mark 15:17

(de Con. Evan. iii. 9) But we must understand that the words of Matthew, they put on him a scarlet robe, Mark expresses by clothed him in purple; for that scarlet robe was used by them in derision for the royal purple, and there is a sort of red purple, very like scarlet. It may also be that Mark mentions some purple which the robe had about it, though it was of a scarlet colour.

(ubi sup.) For since He had been called King of the Jews, and the scribes and priests had objected to Him as a crime that He usurped rule over the Jewish people, they in derision strip Him of His former garments, and put on Him a purple robe, which ancient kings used to wear.

(ubi sup.) But instead of the diadem, they put on Him a crown of thorns, wherefore it goes on, And platted a crown of thorns, and put it about his head.

Or else, by the purple robe, with which the Lord is clothed, is meant His flesh itself, which He gave up to suffering, and by the thorny crown which He carried is meant, the taking upon Him of our sins.

The vainglory of soldiers, ever rejoicing in disorder and in insult, here displayed what properly belonged to them. Wherefore it is said, And the soldiers led him away into the hall called Praetorium, and they call together the whole band, that is, the whole company of the soldiers, and they clothed him with purple as a king. Let us also put on the purple and royal robe, because we must walk as kings treading on serpents and scorpions, and 1 having sin under our feet. For we are called Christians, that is, anointed ones, just as kings were then called anointed. Let us also take upon ourselves the crown of thorns, that is, let us make haste to be crowned with a strict life, with self-denials and purity.