Charles Ellicott Commentary Mark 7:9

"And he said unto them, Full well do ye reject the commandment of God, that ye may keep your tradition." — Mark 7:9 (ASV)

Full well you reject.—The adverb is peculiar to Saint Mark and has in it the ring of a scathing and indignant irony. The word “reject” is hardly formal enough; the Greek conveys the idea, as in Galatians 3:15 and Hebrews 7:18, of “rescinding” or “repealing.” The Pharisees practically did this when they added traditions that pretended to be interpretations but were, in reality, at variance with it.