Even after Jesus had done all these miraculous signs in their presence, they still would not believe in him.

John again refers to the miracles of Jesus as “signs” because their purpose was to point men to God; they were not to be mere displays of power. In this case, the signs should have produced faith in those who saw them.

“all these” refers to a large number. Some examples are:

  •  Water changed to wine (John 2:9)
  •  Nobleman’s son healed (John 4:46)
  •  Huge catch of fish (Luke 5:6)
  •  Demoniac in the synagogue (Mark 1:26, Luke 4:35)
  •  Peter’s mother-in-law healed (Mat 8:14, Mark 1:31, Luke 4:38)
  •  Cleansing the leper (Mat 8:3, Mark 1:41, Luke 5:13)
  •  Paralytic (Mat 9:2, Mark 2:3, Luke 5:18)
  •  Impotent man healed (John 5:5)
  •  Withered hand (Mat 12:10, Mark 3:1, Luke 6:6)
  •  Centurion’s servant (Mat 8:5, Luke 7:2)
  •  Raising the widow’s son (Luke 7:11)
  •  Demoniac (Mat 12:22, Luke 11:14)
  •  Tempest stilled (Mat 8:26, Mark 4:39, Luke 8:24)
  •  Demoniacs of Gadara (Mat 8:28, Mark 5:1, Luke 8:26)
  •  Raising of Jairus’ daughter (Mat 9:18, Mark 5:22, Luke 8:41)
  •  Issue of blood (Mat 9:20, Mark 5:25, Luke 8:43)
  •  Blind men (Mat 9:27)
  •  Demoniac (Mat 9:32)
  •  Feeding the five thousand (Mat 14:15, Mark 6:41, Luke 9:12, John 6:5-6)
  •  Walking on the sea (Mat 14:25, Mark 6:49, John 6:19)
  •  Daughter of Syrophenician (Mat 15:22, Mark 7:25)
  •  Feeding the four thousand (Mat 15:32, Mark 8:8)
  •  Deaf and dumb healed (Mark 7:33)
  •  Blind man (Mark 8:23)
  •  Lunatic child (Mat 17:14, Mark 9:26, Luke 9:37)
  •  Tribute money (Mat 17:24)
  •  Ten lepers (Luke 17:12)
  •  Blind man (John 9:1)
  •  Lazarus raised (John 11:1-44)
  •  Heals woman with the spirit of infirmity (Luke 13:11)
  •  Man with dropsy (Luke 14:2)
  •  Blind men (Mat 20:30, Mark 10:46)
  •  Cursing the fig tree (Mat 21:19)
  •  Second huge catch of fish (John 21:6)
  •  General healings (Mat 14:14, 15:29-31)

“had done” = the verb is in the perfect tense which, as in the English, indicates an action completed in the past, once and for all, and not needing repetition. The miracles were of a quality that should have produced faith and their stubborn refusal to believe in the face of such great light (12:35) (cf. “still would not believe” in this verse) shows that the guilt of His opponents is present and not just past as was foretold in the prologue of this gospel (1:11).