47 48 | Plato received Rites of Isis and Osiris in Egypt when he was 47-years-old, Manly P. Hall (Egyptian Freemasonry)

This honor was recorded in the British Museum according to Manly P. Hall on the 48th page (Freemason = 48), 47 pages from the first, of his book Crate Repoa, or Initiations to the Ancient Mysteries of the Priest of Egypt.

Here is more relevance for 47 and time, telling us that the concept goes back to at least 381 BC, when Plato was 47-years-old.

http://www.espn.com/nba/story/_/id/19919869/james-harden-houston-rockets-agree-four-year-extension