In Matthew 16;5-12, Jesus had just rebuked the pharisees and sadducees. Jesus and the disciples got into their boat and went to the other side of the sea of Galilee. When they got there, Jesus spoke to them in a parable. He said, beware of the leaven of the pharisees and sadducees. The disciples didn’t understand what He was talking about. Jesus had to explain that the leaven of the pharisees and sadducees is their doctrines, they had made up. They weren’t following God. Jesus said, it’s not what we eat that defiled us. It is what comes out of our heart, that does. For out of the abundance of the heart the mouth speaks. The disciples understood. The title is from a John Steinbeck book, Of Mice and Men. It says, the best laid plans of mice and men go awry. With God all things are possible. This is why we must guard our hearts and minds with the peace of God.