Exodus 3:1

Now Moses The years of Moses's life are remarkably divided into three forties; the first forty he spent as a prince in Pharaoh's court, the second a shepherd in Midian, the third a king in Jeshurun. He had now finished his second forty when he received his commission to bring Israel out of Egypt. Sometimes it is long before God calls his servants out to that work which of old he designed them for. Moses was born to be Israel's deliverer, and yet not a word is said of him till he is eighty years of age. To the mountain of God So called, either from the vision of God here following, (see Acts 7:30,) or by anticipation, from God's glorious appearance there, and his giving the law from thence. Even to Horeb Called also Sinai, Exodus 19:1. Probably Horeb was the name of the whole tract of mountains, and Sinai the name of that particular elevation where the vision happened, and the law was delivered: or Horeb and Sinai were two different summits of the same mountain.