"I know of three classes among the saved; the slaves, the hired servants, the sons. If you are a slave, be afraid of the whip; if you are a hired servant, look only to receive your hire; if you are more than this, a son, revere Him as a Father, and work that which is good, because it is good to obey a Father; and even though no reward should come of it for you, this is itself a reward, that you please your Father."