Kami Nelson of the Wayne Dupree Show thinks slavery is inconsistent with the God of the Bible, who doesn't change

Slaves, be obedient to those who are your earthly masters, with fear and trembling, in singleness of heart, as to Christ; -- Ephesians 6:5

Slaves, obey in everything those who are your earthly masters, not with eyeservice, as men-pleasers, but in singleness of heart, fearing the Lord. -- Colossians 3:22