Alternating New / Old Testament figures (left to right): Peter, Job, John the Evangelist, David....)

Mary, Christ, and John the Baptist with below the Dove of the Holy Spirit and angels bearing the 4 Gospels with their incipits: Matthew, Mark, Luke, and John (from left to right).

 

Monstrance displaying the Host on the altar flanked by St. Peter on the left and St. Paul on the right. The Four Latin Church Fathers are seated adjacent to the altar: Sts Gregory and Jerome on the left and Sts. Ambrose and Augustine on the right. The head of St. Peter appears to be based on the likeness of Pope Julius II (compare to Raphael's Portrait of Julius II)