The tympanum would have inspired terror in believers that passed beneath it and viewed the detailed high relief sculpture. The bottom of the tympanum underneath the weighing of the souls has an inscription that states, "May this terror terrify those whom earthly error binds for the horror of the images here in this manner truly depicts what will be". The tympanum is framed by two archivolts. The inner one has carved foliage while the outer archivolt consists of magnificently detailed medallions representing the four seasons, zodiacs, and labors of the months.