Passage cross-references.

Ye serpents, ye generation of vipers, how can ye escape the damnation of hell?

O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh.

And when the barbarians saw the venomous beast hang on his hand, they said among themselves, No doubt this man is a murderer, whom, though he hath escaped the sea, yet vengeance suffereth not to live.

Are they ministers of Christ? (I speak as a fool) I am more; in labours more abundant, in stripes above measure, in prisons more frequent, in deaths oft.

He shall suck the poison of asps: the viper’s tongue shall slay him.

The burden of the beasts of the south: into the land of trouble and anguish, from whence come the young and old lion, the viper and fiery flying serpent, they will carry their riches upon the shoulders of young asses, and their treasures upon the bunches of camels, to a people that shall not profit them.

Behold, ye are of nothing, and your work of nought: an abomination is he that chooseth you.

They hatch cockatrice’ eggs, and weave the spider’s web: he that eateth of their eggs dieth, and that which is crushed breaketh out into a viper.

But when he saw many of the Pharisees and Sadducees come to his baptism, he said unto them, O generation of vipers, who hath warned you to flee from the wrath to come?

As unknown, and yet well known; as dying, and, behold, we live; as chastened, and not killed;

As if a man did flee from a lion, and a bear met him; or went into the house, and leaned his hand on the wall, and a serpent bit him.