Lest we forget, Moses had a wife, Zipporah and two sons, Gershom and Eliezer with him before being chosen to lead the Israelites out of Egypt. At some point in time he had left them with Jethro, his father-in-law, the priest of Median.
After learning of how God was caring for His people under Moses’ leadership, Jethro brought Zipporah, Gershom and Eliezer to him in the wilderness. It was a joyous reunion with Moses and Jethro inquiring about each other’s welfare.
Jethro recognized that Moses was working too hard in being solely responsible for mediating between the people and God. He suggested dividing the people into thousands, hundreds, fifties and tens and setting qualified men over those groups to judge the smaller matters. Moses then had time and strength to judge the great matters.
After a period of time, Jethro returned to his home in Median.