Sistine Chapel ceiling Section reference. Michelangelo wrote a poem describing the arduous conditions under which he worked The overt subject matter of the ceiling is the doctrine of humanity's need for Salvation as offered by God through Jesus. It is a visual metaphor of Humankind's need for a covenant with God. The Old Covenant of the Children of Israel through Moses and the New Covenant through Christ had already been represented around the walls of the chapel. Some experts, including Benjamin Blech and Vatican art historian Enrico Bruschini, have also noted less overt subject matter, which they describe as being "concealed" and "forbidden."
Sistine Chapel ceiling God, he was swallowed by a "mighty fish". He spent three days in its belly and was eventually spewed up on dry land where he went about God's business. Jonah was thus seen as presaging Jesus, who having died by crucifixion, spent part of three days in a tomb and was raised on the third day. So, on the ceiling of the Sistine Chapel, Jonah, with the "great fish" beside him and his eyes turned towards God the Creator, represents a "portent" of the Passion and Resurrection of Christ. The Jonah figure placed right over the altar activated the Passion