The original Low German text is lost here.
Between the bishop and the abbot there used to be a duke, but he (and a Death) was cut out and disappeared when a door was expanded in the church wall in 1799.
The picture to the left shows the door as it looked December 2001. Above the door one can see the new stained glass windows from 1952-56.
The picture to the right is Suhl's engraving from 1783. I don't know whether the colouring happened before 1799.
Notice that the duke and Death (to the extreme right of the picture) are not holding hands. The duke holds a flag and Death uses both hands to catch the abbot (not in the picture). This is because there's always been a (smaller) door between the duke and Death and they have always been on two separate canvasses. When the door was enlarged, it was necessary to remove them both.