The work is part of a larger scheme of decoration within the chapel which represents much of the doctrine of the Catholic Church.
The original Sumerian script was adapted for the writing of the Semitic Akkadian (Assyrian/Babylonian), Eblaite and Amorite languages, the language isolate Elamite, and for the language isolate Hattic, Hurrian, and Urartian languages, as well as Indo-European languages Hittite and Luwian, and it inspired the later Semitic Ugaritic alphabet as well as Old Persian cuneiform.
Emerging in Sumer in the late fourth millennium BC to convey the Sumerian language which was a language isolate (the Uruk IV period), cuneiform writing began as a system of pictograms.
In the third millennium, the pictorial representations became simplified and more abstract as the number of characters in use grew smaller (Hittite cuneiform).
The Sumerian Cuneiform tablets, uncovered in the 17 century, provide modern man with a new understanding of our history.
This lost knowledge has been slow to make its way into mainstream thought and is just now beginning to air on television on both the History and Discovery Channels.