 In the Bible, they skip years pretty quickly. So he went from baby to 40 years old. Moses had grown up and he went out to visit his people, the Israelites, and he saw how they were doing forced labor. During his visit, he saw an Egyptian beating one of the Hebrew slaves. After looking around to make sure no one was watching, Moses killed the Egyptian and buried him in the sand. The next day, as Moses was out visiting his people again, I mean, he's got these roots, he's got these Hebrew concern, but he is the prince, he is the man, he's the next guy for the throne.