But the slaves were told that there was an afterlife, and that they had a better chance of going there than rich people. That must have been nice to hear for them.
Yup. Which was why some (probably Nietzsche, but AFAICR several people before him too) called Christianity "a religion for slaves": It's very very useful for elites throughout the ages, from Roman patricians to current techbroligarks, to fob the plebs off with "Your reward will come in the afterlife!"... So they don't make a ruckus about getting any reward for their toil in the present. Or, as Marx (no, not Groucho) put it: "Religion is an opium for the masses"; means the same thing.
Yup. Which was why some (probably Nietzsche, but AFAICR several people before him too) called Christianity "a religion for slaves": It's very very useful for elites throughout the ages, from Roman patricians to current techbroligarks, to fob the plebs off with "Your reward will come in the afterlife!"... So they don't make a ruckus about getting any reward for their toil in the present. Or, as Marx (no, not Groucho) put it: "Religion is an opium for the masses"; means the same thing.