In today's Gospel Jesus takes some broad commandments that many people probably don't find too difficult to follow and deepens them, making them much more challenging. From now on, it's not enough just that we don't "kill anybody". We must love our neighbor in body and soul. It's not enough that we don't sleep around. We must have purity of heart. The good news is that if Jesus commands it, this means it is possible for us -- but only possible if it's actually Jesus who does it: Jesus's charity in me. Jesus's purity in me.