What does this mean: then jesus said to the crowds and to his disciples: 2 “the teachers of the law and the pharisees sit in moses’ seat. 3 so you must be careful to do everything they tell you. but do not do what they do, for they do not practice what they preach. 4 they tie up heavy, cumbersome loads and put them on other people’s shoulders, but they themselves are not willing to lift a finger to move them.”(matthew 23: 1-4).