that overlooks the fact that in the single book of the Bible dealing with a slave and his owner, Paul asks the owner to treat the slave as his brother instead of as a slave.....
That's not close to the only reference to slavery. But in the same passage Paul commands slaves to honor their master, comparing it to the obligation to honor God.
Here is what your side has argued...
"[Slavery] was established by decree of Almighty God...it is sanctioned in the Bible, in both Testaments, from Genesis to Revelation...it has existed in all ages, has been found among the people of the highest civilization, and in nations of the highest proficiency in the arts." Jefferson Davis, President of the Confederate States of America.
"There is not one verse in the Bible inhibiting slavery, but many regulating it. It is not then, we conclude, immoral." Rev. Alexander Campbell
"The right of holding slaves is clearly established in the Holy Scriptures, both by precept and example." Rev. R. Furman, D.D., Baptist, of South Carolina
"The hope of civilization itself hangs on the defeat of Negro suffrage." A statement by a prominent 19th-century southern Presbyterian pastor, cited by Rev. Jack Rogers, moderator of the Presbyterian Church (USA).
"The doom of Ham has been branded on the form and features of his African descendants. The hand of fate has united his color and destiny. Man cannot separate what God hath joined." United States Senator James Henry Hammond. 3