Albert Barnes Commentary Acts 7:29

"And Moses fled at this saying, and became a sojourner in the land of Midian, where he begat two sons." — Acts 7:29 (ASV)

Then fled Moses, etc. Moses fled because he now realized that it was known. He had thought it was unobserved (Exodus 2:12). But he now believed that word of it might reach Pharaoh, and that his life might therefore be in danger. And he was not mistaken; for as soon as Pharaoh heard of it, he sought to take his life (Exodus 2:16).

Was a stranger. Or became a sojourner—paroikos—one who had a temporary dwelling in the land. The use of this word implies that he did not expect to make that his permanent dwelling.

In the land of Madian. This was a part of Arabia. It was situated on the east side of the Red Sea. The city of Midian is placed there by Arabian geographers; but the Midianites seem to have spread out along the desert east of Mount Seir, to the vicinity of the Moabites. To the west, they also extended to the neighborhood of Mount Sinai. This was largely a desert region, an unknown land, and Moses expected to be safe from Pharaoh there.

Where he begat two sons. He married Zipporah, the daughter of Reuel (Exodus 2:18), or Jethro (Numbers 10:29; Exodus 3:1), a priest of Midian. The names of the two sons were Gershom and Eliezer (Exodus 18:3–4).