a) Red Sea Passage of the Hebrews (Exodus 14:15-31)

Circumscription: Unda rubens mundam/ baptismi misticat undam
"The reddish wave miraculously foretells the waters (flood) of universal baptism"

b) Christ's Passage to the Office of Messiah (Matthew 3:13-17; Mark 1:9-11; Luke 3:21-22; John 1:21-32)

Circumscription: Fit via dilutis/ Christi baptisma salutis
"Christ's baptism will be the way of salvation for the cleansed"

c) Global Passage on Twelve Oxen (1 Kings 7:23-29; 2 Chronicles 4:2-5)

Circumscription: Forma fuit sacra maris umbra boumque lavacri
"The image of oxen and ocean is a forecast of the (universal) holy cleansing"

Comment: The image is a seemingly ‘naive' illustration of the Augustinian concept of world history: The bronze basin that the twelve bulls,- or oxen, foreboding the universal mission of the apostles, - carry stands for the huge tub Solomon had placed, by divine command, at the entrance of the Temple in Jerusalem. In the context of the Verdun Altar, the basin containing the ocean is seen as the globe, as mappa mundi, representing the terrestrial orb that serves providence as humankind's baptismal font on the long road to salvation.