Daniel Dana, Presbyterian, condemns slavery. Let religion’s power and love bear upon slavery. (A future, unfilled hope). This will soften the hearts of masters.
Today, we see pushback when a religious person advocates fair treatment of workers. (Maybe also some not see role religion had in fighting slavery, or worse assume biblical orthodoxy of slavers.)
How can you soften the hearts and demonstrate the omnipotence and meekness of the gospel?