so whats the non-cheap way to point out that the bible tells slaves to obey their masters?
What the bible does teach lead to the social trend described by Hilaire Belloc in The Servile State which lead to the decline and fall of slavery within the Roman Empire and the rise of a much more stable and less oppressive social order. It was one of the only examples in history of the over throwing of an oppressive social institution without mass bloodshed, war, revolution and displaced populations.
However, so far as the institution of slavery itself goes it survived for a long, long time after the selective citation of biblical or scriptural authority was in vogue, I wonder why that was? Oh, yeah, that's right Darwinism, science and rationalism, who'd have thunk it?
But wait, were's the evidence for that? Well, its hard to find because unlike the bible which is reproduced warts and all by Christians honest about their history there is no single volume or text or group of texts universally supported as the canon of rationalism and science. So there's nothing to be produced warts and all and scientists or rationalists can pass off frenology or other quack science and mad science as abberations which really are a variety of unreason after all.
Although, the once biblical support for slavery acknowledged, who or what lead the modern campaign for the abolition of slavery? Wilberforce? Wait he was a Christian moralist!! Must not have read his bible