Now Moses was looking after the flock of Jethro, his father-in-law, the priest of Midian: and he took the flock to the back of the waste land and came to Horeb, the mountain of God.
And Moses went back to Jethro, his father-in-law, and said to him, Let me go back now to my relations in Egypt and see if they are still living. And Jethro said to Moses, Go in peace.
Then Moses said to Hobab, the son of his father-in-law Reuel the Midianite, We are journeying to that place of which the Lord has said, I will give it to you: so come with us, and it will be for your profit: for the Lord has good things in store for Israel.
But the man who, being unclean, does not make himself clean in this way, will be cut off from the meeting of the people, because he has made the holy place of the Lord unclean: the water has not been put on him, he is unclean.