The word anoia is translated as madness in one place and as folly in another. In Luke 6:11, the word describes the scribes and Pharisees in their reaction to Christ’s healing of the man with a withered hand. Because Jesus saved a life on the sabbath, they were determined in their “defense” of sabbath, to take Christ’s life. “And they were filled with madness; and communed one with another what they might do to Jesus.” Madness is good way to describe it. Because Christ should not have healed a man’s hand on the sabbath, they joined hands in a murder plot on the sabbath.
In 2 Tim. 3:9, this same word is used to describe the same kind of false teachers as Jannes and Jambres were — running headlong into corruption, reprobation and folly.