, the
Crucifixion of Human and the
Brazen Serpent.
In this intricate iconographic structure the coming of Christ is foretold in the nine scenes from Genesis, according to the principle of correspondence between the Old and New Testaments that was illustrated repeatedly throughout Christian art. An added element is the oak tree of the Rovere family, to which Julius II and his uncle Sixtus iv belonged. The Rovere oak tree invaded the, scenes of Creation and alluded poetically to the Tree of Life, which stood near the Tree of Knowledge in the Garden of Eden and whose fruit in medieval theology was Christ.
The Fall of Man combines the Temptation and the Expulsion in a single scene, which in one motion leads the eye from the crime to punishment, linked by the Tree of Knowledge, represented as a fig tree. Never in history had nude figures been painted on such a colossal scale.
Michelangelo's vision of a new and grander humanity reaches its supreme embodiment in the Creation of Adam. Instead of standing on earth as in all earlier Creation scenes, the Lord floats through the heavens and is enveloped in the violet mantle he wears in all the scenes in which he appears. The violet colour is required for the vestments of the clergy during Advent and Lent, the penitential periods before the coming of Christ at Christmas and his resurrection at Easter. The Lord is borne by wingless angels. Michelangelo's Creator for the first time makes believable the concept of omnipotence. A dynamo of creative energy, God stretches forth his hand, about to touch with his finger the extended finger of Adam. This image of the creative finger derives from the famous medieval hymn «Come, Creator Spirit» sung at Pentecost, the festival of the Descent of the Holy Spirit. In this hymn the «finger of the paternal right hand» is invoked to bring speech to our lips, light to our senses, love to our hearts, and strength to our bodies. Adam reclines on the barren ground below, longing for life, and love about to be instilled by this finger. Adam means «Earth» and the finger is shown ready to be charged with the energy that will lift him from the dust and make him a «living soul». Adam's body is the most perfect structure ever created by Michelangelo. It embodies the beauty of Classical antiquity and the spirituality of Christianity.
The final scenes as one moves toward the altar were also the last in order of execution.
