Exodus 4:19

In Midian. — Moses appears to have delayed his departure after he obtained permission to go from Jethro. Hence the address “Go, return,” which is peremptory.

All the men which sought thy life. — Not only the Pharaoh (Exodus 2:23), but the kindred of the murdered man, and the officials empowered by the Pharaoh to arrest Moses. As forty years had elapsed since the homicide, this is readily conceivable.