Complex sentence: Jacobs (2011), 112 While the exterior panels served as a funerary monument for the donors, according to Lynn Jacobs "the dual function of the work accounts for the choice of the theme of the Last Judgement on its interior".
Split into simpler sentences: Jacobs (2011), 112 The exterior panels served as a funerary monument for the donors. According to Lynn Jacobs "the dual function of the work accounts for the choice of the theme of the Last Judgement on its interior".