In the Book of Exodus, how old was Moses when he spoke to Pharaoh?

In the Book of Exodus, Moses was eighty years old when he spoke to Pharaoh.

Exodus 7:7 gives the ages of Moses and Aaron at the beginning of their confrontation with Pharaoh: Moses was eighty years old, and Aaron was eighty-three. The statement places the first public phase of Moses's mission in later adulthood rather than in youth.

Moses had already spent years in Egypt and then a long period in Midian before returning. The narrative therefore presents his leadership as following a substantial life history: royal-court upbringing, exile, marriage in Midian, and a divine commission at the burning bush.

The number should not be confused with the forty years traditionally associated with each of Moses's major life stages in later biblical interpretation. Exodus specifically states eighty for Moses when he and Aaron approached Pharaoh. It also records that Moses lived to 120, making this the final third of his life by the story's chronology.