God watches Satan approach Earth and predicts his success in corrupting Man. Man has free will. But God omnisciently knows what will happen. God adds that Man can be saved through mercy and grace, but he must also accept the just punishment of death, unless someone takes on death for Man. The Son offers to become a man and suffer death in order to overcome it. The angels rejoice.
In the meantime, Satan, sitting on the edge of the Earth, cannot see the way to Man. Satan disguises himself as a cherub and flies to the sun to talk with the archangel, Uriel. Uriel shows Satan the way to Man.
Looking at Earth, Satan is taken with its beauty but quickly overcomes his sympathy to concentrate on what he must do. He sees Adam and Eve and is entranced with their beauty. As Satan listens to the pair, they talk about God's one commandment that they not eat from the Tree of Knowledge under penalty of death. Satan immediately begins to formulate a plan.
Uriel, on the sun, becomes suspicious of the cherub whose face shows changing emotions and goes to warn Gabriel. Gabriel says that he and his angels will capture any interlopers in the Garden, and late that night Ithuriel and Zephron capture Satan whispering in Eve's ear. The two angels bring Satan before Gabriel, who, with God's help, banishes the tempter from Earth.
