And there shall come forth a rod out of the stem of Jesse, and a Branch shall grow out of his roots. Jesse is the root, Mary is the Rod and Christ is the flower. A tree grows from the patriarch figure of Jesse lying at the bottom of the window, ascends through four kings to Mary and then to Christ at the top.
Prophets flank each pane along with seven doves representing the seven gifts of the Holy Spirit.
The scene, so rich in symbolism, was popular with the people.