God called upon Abraham as God found a new nation in an undesignated land that he later learned was Canaan. The known children of Abraham would be Isaac, son of Abraham and Sarah. The last question is more of a personal question, how you feel about it.
The answer is legal system.
The abolitionist argument that is most rooted in religion, according to the excerpt, is that <span>God does not consider one race inferior to another. The author clearly states that the color of one's skin is irrelevant when it comes to human relations, and that ultimately, black people should not be slaves merely because they are black - they are certainly not inferior to white people.</span>