Exodus 4:27

Now Moses was pasturing the flock of Jethro his father-in-law, the priest of Midian; and he led the flock to the west side of the wilderness and came to Horeb, the mountain of God.

Then the anger of Yahweh burned against Moses, and He said, “Is there not your brother Aaron the Levite? I know that he can certainly speak. And moreover, behold, he is coming out to meet you. And he will see you and be glad in his heart.

Then Jethro, Moses’ father-in-law, came with his sons and his wife to Moses in the wilderness where he was camped, at the mount of God.

Then Moses went out to meet his father-in-law, and he bowed down and kissed him; and they asked each other of their welfare and went into the tent.

So he arose and ate and drank, and went in the strength of that food forty days and forty nights to Horeb, the mountain of God.