John Gill Commentary Mark 15:19

"And they smote his head with a reed, and spat upon him, and bowing their knees worshipped him." — Mark 15:19 (ASV)

And they smote him on the head with a reed Or cane, a walking stick which they had put into his hands for a sceptre: this they took out again, and struck him on the head with it, which drove the sharp pointed thorns into his temples:

and did spit upon him ; "upon his face", as the Syriac, Arabic, and Persic versions read:

and bowing their knees , as to a sovereign prince,

worshipped him ; saying the above words, hail, king of the Jews? (See Gill on Matthew 27:29), (See Gill on Matthew 27:30).