To whet your appetite:
When Jesus encounters sociomoral disgust at work in the gospels he does the opposite of what is expected, and in so doing, reframes Israel’s notion of sin. Instead of focusing on people as unclean, Jesus focuses on the boundaries between people as unclean. The Old Testament prophets had a similar message, claiming that God despised Israel’s religious rituals because of injustice.
This displays tension between the “priestly” and “prophetic” traditions (or, as Beck terms it, tension between “sacrifice” and “mercy”). Beck claims that these two ways of thinking are inherently incompatible. Jesus resolved this tension by siding with the prophetic/merciful tradition. Rather than negativity dominance (one drop of poison ruins the whole drink), in Jesus, the clean cleanses the unclean. Jesus overturns the locus of purity in the Jewish world. Purity is now an attitude of the heart; purity is mercy. Like Israel, the church tends to deal in terms of purity, holiness, and sanctity. Because of the tension inherent between mercy and sacrifice, when we appeal to the notions of mercy, love, and hospitality we are asking our churches to do contradictory things. There is no “both/and” – more of one means less of the other. It is hard, then, to make decisions.