Matthew 3:7
When, however, John saw many of the Pharisees and Sadducees coming to receive his baptism, he said to them: "You brood of vipers! Who has prompted you to seek refuge from the coming judgment?
Matthew 12:39
"It is a wicked and unfaithful generation," answered Jesus, "that is asking for a sign, and no sign shall be given it except the sign of the Prophet Jonah.
Matthew 16:4
A wicked and unfaithful generation is asking for a sign, but no sign shall be given it except the sign of Jonah." So he left them and went away.
Matthew 23:36
All this, I tell you, will come home to the present generation.
Acts 2:40
With many other words Peter enforced his teaching, while the burden of his exhortations was--"Save yourselves from the perverse spirit of this age."