'Viper' in the Bible

May Dan be a snake beside the road, a viper by the path, that bites the heels of the horse so that its rider falls backward.

He sucks the poison of serpents; the fangs of a viper kill him.

Afterward it bites like a snake, and stings like a viper.

Don't be so happy, all you Philistines, just because the club that beat you has been broken! For a viper will grow out of the serpent's root, and its fruit will be a darting adder.

When Paul had gathered a bundle of brushwood and was putting it on the fire, a viper came out because of the heat and fastened itself on his hand.