Mark 8:12

12 He sighed deeply in his spirit, and said, "Why does this generation seek a sign? Most assuredly I tell you, there will no sign be given to this generation."

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 Immediately he entered into the boat with his talmidim, and came into the region of Dalmanuta.

11 The Perushim came out and began to question him, seeking a sign from heaven from him, and tempting him.

12 He sighed deeply in his spirit, and said, "Why does this generation seek a sign? Most assuredly I tell you, there will no sign be given to this generation."

13 He left them, and again entering into the boat, departed to the other side.

14 They forgot to take bread; and they didn't have more than one loaf in the boat with them.