Exodus 18 & 19
At this point, the Lord is showing great patience with the people. They vacillate from praising to grumbling, but God answers their requests and continues to show His power and might.
In chapter 18, after the victory over the Amalekites, Moses continued to lead the people towards Mount Sinai to their appointment with the Living God. It is apparent that at some point Moses had sent his wife Zipporah and two sons back to the safety of Midian and his father-in-law. Now it is time for them to reunite. The wisdom of Jethro will be instrumental in helping Moses minister to the people.
Chapter 19 is the story of the fulfillment of God’s promise to Moses that he would lead the people back to Mount Sinai where they would worship the God of Abraham, Isaac and Jacob.