6 Jethro had sent word to him, “I, your father-in-law Jethro, am coming to you with your wife and her two sons.”

Read Exodus 18:6 Using Other Translations

And he said unto Moses, I thy father in law Jethro am come unto thee, and thy wife, and her two sons with her.
And when he sent word to Moses, "I, your father-in-law Jethro, am coming to you with your wife and her two sons with her,"
Jethro had sent a message to Moses, saying, “I, Jethro, your father-in-law, am coming to see you with your wife and your two sons.”