Bible Dictionaries
Viper

Wilson's Dictionary of Bible Types

Isaiah 59:5 (b) This indicates the product of the works and the plans of wicked Israel in producing evil and harmful results.

Matthew 3:7 (a) This type represents wicked teachers whose messages from their mouths poison those who hear them so that they are eternally lost. Not all snakes are vipers. Vipers are snakes which kill with the poison from their fangs, such as the cobra and the rattlesnake. Vipers are a type of false teachers of false cults, who damage and destroy the souls of all who believe their teachings. (See also Matthew 23:33; Luke 3:7).

Bibliography Information
Watson, Walter. Entry for 'Viper'. Wilson's Dictoinary of Bible Types. https://www.studylight.org/​dictionaries/​eng/​wdt/​v/viper.html. 1957.