Matthew 12:39

But He answered, "Only a wicked and treacherous age is hankering for a spectacular sign, and no sign will be given it but the sign of the prophet Jonah.

Matthew 16:4

"It is a wicked and immoral age that is hankering for a spectacular sign, so no sign will be given it but the sign of Jonah." Then He left them and went away.

Luke 11:29-32

Now as the crowds continued to throng upon Him, He began to say: "This is a wicked age. It is looking for a spectacular sign, but none will be given it but the sign of Jonah.

Mark 8:38

For whoever is ashamed of me and my teaching in this unfaithful, sinful age, then the Son of Man will be ashamed of him, when He comes back in His Father's splendor with the holy angels."

James 4:4

You faithless wives! Do you not know that the friendship of the world means enmity with God? So whoever wants to be a friend to the world puts himself down as an enemy to God.

Treasury of Scripture Knowledge

Summary

But he answered and said unto them, An evil and adulterous generation seeketh after a sign; and there shall no sign be given to it, but the sign of the prophet Jonas:

Adulterous

General references

Bible References

Adulterous

Mark 8:38
For whoever is ashamed of me and my teaching in this unfaithful, sinful age, then the Son of Man will be ashamed of him, when He comes back in His Father's splendor with the holy angels."
James 4:4
You faithless wives! Do you not know that the friendship of the world means enmity with God? So whoever wants to be a friend to the world puts himself down as an enemy to God.

No sign

Matthew 16:4
"It is a wicked and immoral age that is hankering for a spectacular sign, so no sign will be given it but the sign of Jonah." Then He left them and went away.
Luke 11:29
Now as the crowds continued to throng upon Him, He began to say: "This is a wicked age. It is looking for a spectacular sign, but none will be given it but the sign of Jonah.

General references

Luke 11:16
But others, to test Him, were demanding from Him a spectacular sign from heaven.