Matteo 3:7

A perplexing, disagreeable situation: 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?

Matthew includes the members of both sects in one and the same category of unworthy intruders. The Pharisees excelled especially in their insistence upon outward observance of the Law and the traditions of the elders, and the Sadducees were rationalists that rejected all the inspired writings but the books of Moses. In either case their religion was nothing but a thin veneer of form and show of pomp, without the assent of the heart.

All the more reprehensible, then, is their affront in appearing at John's baptism, where repentance, change of heart, was the primary demand. It may have been partly curiosity, partly fascination, since they could not remain indifferent to a movement which had assumed such proportions, that brought them to John. At any rate, they came upon the scene, they appeared at the place where John was baptizing.

But their reception at his hands was anything but pleasant. "Generation of vipers" is the epithet he applies to them, offspring of serpents, imbued with the nature of the slimy, stinging reptiles. It is an outburst of intense moral aversion that causes him to shrink from, and openly denounce, these visitors as both deceitful and malicious, Psalms 140:3; Isaiah 14:29; Isaiah 59:5; Psalms 58:4.

It seemed indeed as though they were fleeing from the wrath to come by making application for entrance into the Kingdom, but there is every reason for distrusting their sincerity. It is impossible to escape from the wrath which will bring upon hypocrites the holy, penal justice of God, and thus the punishment itself, Romans 1:18; Ephesians 2:3.