At the beginning of Chapter Eight of the Gospel according to Mark (Mark 8:1-21) there are a series of interconnected events. First, Jesus facilitates the feeding of a crowd of 4,000 people. After this, Jesus and the disciples get in boats and cross the Sea of Galilee. When he lands on the other shore, some Pharisees come up to Jesus and demand that he provide them with proof of his credentials from God. “Give us a sign from heaven!” This is a test of Jesus’ legitimacy. Who do you think you are? Where do you come from? What right or authorization do you have to do what you are doing? Show us! Now! Jesus simply replies, “No sign will be given to this generation.” Jesus gets back into a boat with his disciples and leaves those Pharisees to wonder, or to gloat at their ability to get under Jesus’ skin.

When they are away from shore, Jesus gives a warning to his followers (which means us, too). “Beware of the leaven of  the Pharisees and the leaven of Herod.” As happens so often, the disciples (us?) jump to conclusions and miss Jesus’ point. They (maybe because their stomachs are growling?) assume that Jesus is chiding them because they have only one loaf of bread on board (and what is that among so many hungry people – sound familiar?) This misunderstanding leads, once again, to a deeper, fuller teaching.

Remember that immediately before the Pharisees challenge Jesus, he had orchestrated the operation that fed 4,000 hungry people. Doesn’t that, by itself, hint that God is at work in and through Jesus? The disciples had been there, had participated in that gracious experience. And you, my close followers? Don’t you see? It’s not about bread people! So, what is Jesus warning us against?

Jesus used leaven as a parabolic example of the tiny, subversive, and potent action that brings about the Kingdom of God. But, in popular Israelite culture, leaven had another connotation. Leaven came to signify an agent of corrosive action – indicating an invasive, pervasive source of evil. The leaven of the Pharisees, as Jesus frequently pointed out to them, was their hypocrisy. They had powerful influence, but used it in a way that made things worse for others – especially the little, ordinary people. The leaven of Herod was manifested in his ruthless and amoral behavior – greed, lust, domination, control… He, too, used his role, which might have brought about much good, to make lives more difficult.

This type of leaven is seductive – to use your role, power, influence to try to manipulate or control others. Often, fear, threats, coercion are employed to get your own way. This leaven cannot build anything positive, much less God’s Kingdom. Fear is a powerful influencer. Jesus bet his life that love was even more powerful. Which leaven do we choose?