God clearly does advocate slavery with rules and I think if you follow God's rules for slavery it could be a very joyous and mutual relationship. As for rape, no God clearly does not advocate rape. He says that if you rape a married or betrothed woman you and the woman will be put to death, but the betrothed woman will be spared if it's in the country. He says if you rape an unbetrothed, unmarried woman they have to marry and never divorce her.