Mark 8:12

And groaning in spirit, He says, What sign does this generation seek after? truly I say unto you, No sign shall be given unto this generation.

Mark 7:34

and looking up to heaven, he groaned, and says to him, Ephphatha, which is, Be thou opened.

Matthew 12:39-40

He responding, said to them, A wicked and adulterous generation seeks after a sign; and no sign shall be given unto it except the sign of the prophet Jonah.

Matthew 16:4

A wicked and adulterous generation seeks after a sign. And no sign shall be given it, except the sign of the prophet Jonah. And leaving them, He departed.

Mark 3:5

And looking round on them with indignation, being grieved over the hardness of their hearts, He says to the man; Reach forth thy hand. And he reached it forth and it was restored.

Mark 6:6

And He was astonished on account of their unbelief.And He went about the villages in a circuit teaching.

Mark 9:19

And He responding to them, says, O faithless generation, how long shall I be with you? how long shall I bear with you? Bring him hither to me.

Luke 11:29-30

And the multitudes being assembled, He began to say, This is a wicked generation: it seeks after a sign, and no sign shall be given to it except the sign of the prophet Jonah.

Luke 16:29-31

But Abraham says, They have Moses and the prophets; let them hear them.

Luke 19:41

And when He drew near, seeing the city He wept over it,

Luke 22:67-70

Saying, If thou art the Christ, tell us. And He said to them, If I may tell you, you will not believe:

John 11:33-38

Then when Jesus saw her weeping, and the Jews, having come with her, weeping, He groaned in spirit, and troubled Himself,

John 12:37-43

And He having done so many miracles in their presence, they were not believing on Him,

Treasury of Scripture Knowledge

Summary

And he sighed deeply in his spirit, and saith, Why doth this generation seek after a sign? verily I say unto you, There shall no sign be given unto this generation.

General references

Bible References

He sighed

Mark 3:5
And looking round on them with indignation, being grieved over the hardness of their hearts, He says to the man; Reach forth thy hand. And he reached it forth and it was restored.
Mark 7:34
and looking up to heaven, he groaned, and says to him, Ephphatha, which is, Be thou opened.
Mark 9:19
And He responding to them, says, O faithless generation, how long shall I be with you? how long shall I bear with you? Bring him hither to me.
Luke 19:41
And when He drew near, seeing the city He wept over it,
John 11:33
Then when Jesus saw her weeping, and the Jews, having come with her, weeping, He groaned in spirit, and troubled Himself,

Why

Mark 6:6
And He was astonished on account of their unbelief.And He went about the villages in a circuit teaching.
Luke 16:29
But Abraham says, They have Moses and the prophets; let them hear them.
Luke 22:67
Saying, If thou art the Christ, tell us. And He said to them, If I may tell you, you will not believe:
John 12:37
And He having done so many miracles in their presence, they were not believing on Him,

There

Matthew 12:39
He responding, said to them, A wicked and adulterous generation seeks after a sign; and no sign shall be given unto it except the sign of the prophet Jonah.
Matthew 16:4
A wicked and adulterous generation seeks after a sign. And no sign shall be given it, except the sign of the prophet Jonah. And leaving them, He departed.
Luke 11:29
And the multitudes being assembled, He began to say, This is a wicked generation: it seeks after a sign, and no sign shall be given to it except the sign of the prophet Jonah.

General references

Luke 11:16
And others tempting, continued to seek with Him a sign from heaven.