The Israelites left the desert and moved from one place to another each time the LORD ordered them to. Once they camped at Rephidim, but there was no water for them to drink.
While Israel was camped in the desert near Mount Sinai, Jethro sent Moses this message: "I am coming to visit you, and I am bringing your wife and two sons."
One day, Moses was taking care of the sheep and goats of his father-in-law Jethro, the priest of Midian, and Moses decided to lead them across the desert to Sinai, the holy mountain.
God replied, "I will be with you. And you will know that I am the one who sent you, when you worship me on this mountain after you have led my people out of Egypt."
The people of Israel had left Egypt and were living in the Sinai Desert. Then on the first day of the second month of the second year, Moses was in the sacred tent when the LORD said:
Moses brought our people together in the desert, and the angel spoke to him on Mount Sinai. There he was given these life-giving words to pass on to us.
All of this has another meaning as well. Each of the two women stands for one of the agreements God made with his people. Hagar, the slave woman, stands for the agreement that was made at Mount Sinai. Everyone born into her family is a slave.