Mark 8:12

12 Provoked, he said, "Why does this generation clamor for miraculous guarantees? If I have anything to say about it, you'll not get so much as a hint of a guarantee."

Mark 8:12 Meaning and Commentary

Mark 8:12

And he sighed deeply in his Spirit
In his human soul; and which shows that he had one, and was subject to grief and sorrow, and all passions and infirmities, excepting sin. This deep sigh was on account of the hardness of their hearts, the malignity of their minds, and insincerity of their intentions; who had no view to come at truth by this inquiry, but to ensnare him:

and saith, why doth this generation seek after a sign?
when so many have been shown among them, and they will not believe:

verily I say unto you, there shall no sign be given to this
generation:
such as they desired; namely, one from heaven. The Evangelist Matthew adds, "but the sign of the Prophet Jonas"; (See Gill on Matthew 16:4), (See Gill on Matthew 12:40).

Mark 8:12 In-Context

10 He himself went straight to the boat with his disciples and set out for Dalmanoutha.
11 When they arrived, the Pharisees came out and started in on him, badgering him to prove himself, pushing him up against the wall.
12 Provoked, he said, "Why does this generation clamor for miraculous guarantees? If I have anything to say about it, you'll not get so much as a hint of a guarantee."
13 He then left them, got back in the boat, and headed for the other side.
14 But the disciples forgot to pack a lunch. Except for a single loaf of bread, there wasn't a crumb in the boat.