Jethro, Moses’ father-in-law, took Moses’ wife Zipporah after he had sent her back,

For you must not worship any other god, for the Lord, whose name is Jealous, is a jealous God.

Now Moses was shepherding the flock of his father-in-law Jethro, the priest of Midian, and he led the flock to the far side of the desert and came to the mountain of God, to Horeb.

and all the firstborn in the land of Egypt will die, from the firstborn son of Pharaoh who sits on his throne, to the firstborn son of the slave girl who is at her hand mill, and all the firstborn of the cattle.

“If a man grazes his livestock in a field or a vineyard, and he lets the livestock loose and they graze in the field of another man, he must make restitution from the best of his own field and the best of his own vineyard.