An OT verse on slavery that atheists generally don't bring up:
Ex 21
16 He who kidnaps a man and sells him, or if he is found in his hand, shall surely be put to death.
So, the Bible condemns slavery as it was practiced in America, as slaves here were generally kidnapped in Africa and sold. OT slaves were generally captured during war. God sent Israel against other nations in judgment of them, and death and slavery were their punishments. The Bible finds slavery to be a bad state to be in, and God would use other nations in judgment of Israel when it sinned severely, e.g. the Babylonian captivity.
Ex 21
16 He who kidnaps a man and sells him, or if he is found in his hand, shall surely be put to death.
So, the Bible condemns slavery as it was practiced in America, as slaves here were generally kidnapped in Africa and sold. OT slaves were generally captured during war. God sent Israel against other nations in judgment of them, and death and slavery were their punishments. The Bible finds slavery to be a bad state to be in, and God would use other nations in judgment of Israel when it sinned severely, e.g. the Babylonian captivity.