Exodus 7:7: Verse 7
Moses was fourscore years old - He was forty years old when he went to Midian, and he had tarried forty years in Midian; (see Exo 2:11, and Act 7:30); and from this verse it appears that Aaron was three years older than Moses. We have already seen that Miriam their sister was older than either, Exo 2:4.