'Vipers' in the Bible

But when he saw many of the Pharisees and Sadducees coming for baptism, he said to them, “You brood of vipers, who warned you to flee from the wrath to come?

You brood of vipers, how can you, being evil, speak what is good? For the mouth speaks out of that which fills the heart.

You serpents, you brood of vipers, how will you escape the sentence of hell?

So he began saying to the crowds who were going out to be baptized by him, “You brood of vipers, who warned you to flee from the wrath to come?