Slavery - Chapter and verse... [patheos.com]
Wow. The Old Testament clearly endorsed slavery (Exodus 21, for example).
The New Testament was different in that the priority was not the abolition of slavery in a revolutionary way but the development of new human relations in an unfair world which they believed was about to be brought to an end. The apostle Paul's letter to the slave-owner Philemon regarding his runaway slave Onesimus is very interesting, especially these verses:
For this perhaps is why he was parted from you for a while, that you might have him back forever, no longer as a bondservant but more than a bondservant, as a beloved brother—especially to me, but how much more to you, both in the flesh and in the Lord - Philemon 15, 16).
I guess but I think it's very progressive for 2000 years ago. Can you imagine the master and slave relationship completely dissolved by Christian love for their fellow man?
@brentan I am not sure that was what Paul was suggesting. I always took it (and I think my religious teachers took it) that he just didn't want Philemon to beat Onesimus, to consider him not JUST a slave but also a brother. But Paul was also returning Philemon's property to him. ("No longer as [just] a bondservant but more than a bondservant". So he was still a slave. Like a bondservant with extra features. Uck.
Now we can still salvage from this that Onesimus' conversion allowed Paul to appeal to his Christian master for clemency / leniency / kindness, but that has less to do with Christianity itself than with the fact that master and slave now had something in common -- their faith. As if the fact that they had their humanity in common already wasn't enough to make Philemon question the morality of what he was engaging in.
So no, I can't see this as a moral advance. Even the NT advises slaves to be good slaves, and masters to be good masters ... the most you can say is that it would create a less inhumane institution of slavery.
But then this would all be familiar to modern liberal centrists / incrementalists, who want to get the "doable" done, not actually fix anything. To think only the thinkable, not move the Overton window.
@mordant That sums up the situation very well, I think. The only thing I would add, and I think it's important, is that Christians believed the end was coming within a generation of Jesus' death. For that reason, I feel Paul was saying make the best of a bad situation while they wait for the Kingdom to come and sort out all the world's problems.
They realise that they can’t defend the indefensible, so they change the narrative to denial, even though it’s written in their own holy book. They are hypocrites and liars, always were, always will be.