Final answer:
The overall theme of the Sistine Chapel paintings is both the story of David and the relationship to God. The narrative spans from The Creation of the Heavens and Earth to the Expulsion from the Garden of Eden and the story of Noah and the Great Flood. Prophets and sibyls also feature prominently, foretelling the coming of the Christian Messiah.
Step-by-step explanation:
The overall theme of the Sistine Chapel paintings is both the story of David and the relationship to God.
The narrative of the frescoes begins with the story of The Creation of the Heavens and Earth, followed by The Creation of Adam and Eve and the Expulsion from the Garden of Eden, and ends with the story of Noah and the Great Flood.
Additionally, the paintings on the ceiling depict prophets and sibyls foretelling the coming of the Christian Messiah, and stories from the Old Testament that prefigure the New Testament.