Note 3 evenly divided sections of his life, each 40 years (Prince, Shepherd, Leader) _____
DATING THE BIBLICAL CHRONOLOGY by Gerard Gertoux
Moses stands as the last "great personality in Egypt", because although he was considered as "pharaoh's son" for 40 years until 1573 (Exodus 2:15; 11:3;; Deuteronomy 34:7).