'Adulterous Generation' in the Bible

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:

A wicked and adulterous generation seeketh after a sign; and there shall no sign be given unto it, but the sign of the prophet Jonas. And he left them, and departed.

For whoever will be ashamed of me, and my words, in this sinful and adulterous generation, of him the Son of man also will be ashamed, when he comes in the glory of his Father, with the holy angels.