John Gill Commentary Mark 8:18

"Having eyes, see ye not? and having ears, hear ye not? and do ye not remember?" — Mark 8:18 (ASV)

Having eyes, see you not ?
&c.] Meaning perhaps both the eyes of their bodies, and of their understandings: they had bodily eyes, and with them saw the miracles he wrought, and yet took little notice of them; and the eyes of their understandings were enlightened by Christ, and yet saw things but very darkly:

and having ears, hear you not ?
They had their natural hearing, and yet made but little use of it; and did not so diligently attend to the sound of Christ's words: and though they had spiritual ears given them to hear, yet were very dull of, understanding, and taking in things:

and do you not remember ?
the interpretation of parables formerly given, and the miracles of the loaves lately wrought.