John 19:2

And the soldiers platted a crown of thorns,.... This was an emblem of his being surrounded by wicked men, sons of Belial, comparable to thorns, whilst he hung suffering on the cross; and of the sins of his people compassing him about, which were as thorns, very grievous to him; and of his various troubles in life, and of his being made a curse for us at death; thorns being the produce of the curse upon the earth.

And put it on his head: not only by way of derision, as mocking at his character, the King of the Jews, but in order to afflict and distress him.

And they put on him a purple robe: Matthew calls it a scarlet robe; and the Arabic and Persic versions here, "a red" one: it very probably was one of the soldiers' coats, which are usually red: this was still in derision of him as a king, and was an emblem of his being clothed with our purple and scarlet sins, and of the bloody sufferings of his human nature for them, and through which we come to have a purple covering, or to be justified by his blood, and even to be made truly kings, as well as priests, unto God.