What do you think is a moral justification for slavery? As long as it elevates them to some level deserving of rights? Should there be federal slave regulation overseeing their education for the day they’re eventually freed, (you know, along “divine guidelines”)? Or should there be some kind of private PETS (People for the Ethical Treatment of Slaves)?
Oh who cares… If someone politicked it into The Bible, you think it’s “God’s law” and how how your slaves are treated is between you and your God, right?
But my God (objective reality) shows that rejection of slavery in principle is beneficial to my social environment and therefore to my life, and that anyone promoting it under any circumstances is foolish at best, and that I’m morally required to support legislating slave holding away.
And since I can promote and defend my belief way better than you can promote yours, you're SOL.
I'll take the true Biblical G-d over Jefferson's false "gxd of nature" any day.
Please note that as one whose ancestors fought against slavery, it hardly flatters my personal ego to learn that they were wrong.