What pains have you taken, what method have you used, to reclaim (slaves) from their wickedness?
Have you carefully taught them, that there is a God, a wise, powerful, merciful Being, the Creator and Governor of heaven and earth? that he has appointed a day wherein he will judge the world, will take an account of all our thoughts, words, and actions? that in that day he will reward every child of man according to his works? that then the righteous shall inherit the kingdom prepared for them from the foundation of the world; and the wicked shall be cast into everlasting fire, prepared for the devil and his angels?
If you have not done this, if you have taken no pains or thought about the matter, can you wonder at their wickedness? What wonder, if they should cut your throat? And if they did, whom could you thank for it but yourself? You first acted the villain in making them slaves, whether you stole them or bought them. You kept them stupid and wicked, by cutting them off from all opportunities of improving either in knowledge or virtue: And now you assign their want of wisdom and goodness as the reason for using them worse than brute beasts!
The artists of Strasbourg used the Last Judgement to say something about those in authority who had more regard for themselves and their comfort than the poor people of their day. But the Lord is blessing Creation with his Glorious Wounds.