Particularly in confessional poetry, groups that were otherwise silenced and excluded from the tolerance discourse that had been smoldering since the Reformation, such as heterodox and/or women, were able to overcome these predetermined group categorizations and express their ideas. While the Thirty Years' War, caused by opposing denominational groups within Christianity, was pacified by the Peace of Westphalia in 1648, group categorization shifted with the steadily increasing advance of the Ottoman Empire since 1656. In this paper, S. Klimek and L.-S. Stolzenberg will trace this shifting categorization through the poems of Catharina Regina von Greiffenberg. They aim to show how her encouragement to tolerate other Christian denominations against the backdrop of a united and purified Christianity, which as such has better arguments for the conversion of non-Christians, reveals a dynamic conception of tolerance between the poles of inter-denominational tolerance and inter-religious intolerance.