Matthew 3:7
But when he saw many of the Pharisees and Sadducees coming to be immersed, John said to them, "You children of snakes, who warned you to run away from the coming wrath [of God]?
Matthew 12:39
But He said to them, "It is [only] an evil and unfaithful [i.e., to God] generation of people that looks for a [supernatural] sign. And there will not be any sign given to it except the [supernatural] sign [demonstrated in the life] of Jonah, the prophet.
Matthew 16:4
"It is an evil and spiritually unfaithful generation of people [that keeps on] looking for a [supernatural] sign; but there will be no [such] sign given to it except the sign of Jonah [i.e., being in the huge fish for three days]." Then He left them and went away.
Matthew 23:36
Truly I tell you, this generation will bear [the guilt for] all these things.
Acts 2:40
So, Peter testified and urged the crowd with many additional words, saying, "Save yourselves from [the condemnation coming on] this sinful generation [by responding to this message]."