Proverbios 23

But at last such a one stretches himself out as one smitten by a serpent, and venom is diffused through him as by a horned serpent.

Mas al fin como serpiente morderá, y como basilisco dará dolor:

At the last it biteth like a serpent, and stingeth like an adder.

In the end, it bites like a snake, and poisons like a viper.