We seem to assume that slavery is wrong, always has been, and always will be. But early Christians, including bishops, owned slaves and didn’t feel it was wrong, believing that slaves were their moral equals but not their social ones. There was no general outright condemnation of slavery, inspired by a Christian outlook, before the petition of the Mennonites of Germantown in Pennsylvania in 1668. Why are we so sure (if we are) that one day, slavery won't be reinstated as a socially acceptable practice?

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