This was at least after 40 years. See Acts 7:23; Hebrews 11:24-27. The Holy Ghost hath told us what age Moses was at this time: see Acts 7:23. And we are indebted to that blessed Spirit for yet more important information, namely, the cause of his going forth. See Hebrews 11:24-26. Reader! depend upon it that is a precious mark of grace, when a soul is enabled, like Moses, to turn his back upon worldly prospects, to seek him of whom Moses and the prophets did write, Jesus of Nazareth.
Related Commentaries of Exodus 2:11
Exodus 2:11
11 And it came to pass in those days, when Moses was grown, that he went out unto his brethren, and looked on their burdens: and he spied an Egyptian smiting an Hebrew, one of his brethren.