Exodus 4 Moses Returns to Egypt
18 Then Moses went back to Jethro his father-in-law and said to him, "Let me go back to my own people in Egypt to see if any of them are still alive." Jethro said, "Go, and I wish you well."
19 Now the LORD had said to Moses in Midian, "Go back to Egypt, for all the men who wanted to kill you are dead." 20 So Moses took his wife and sons, put them on a donkey and started back to Egypt. And he took the staff of God in his hand.
21 The LORD said to Moses, "When you return to Egypt, see that you perform before Pharaoh all the wonders I have given you the power to do. But I will harden his heart so that he will not let the people go. 22 Then say to Pharaoh, 'This is what the LORD says: Israel is my firstborn son, 23 and I told you, "Let my son go, so he may worship me." But you refused to let him go; so I will kill your firstborn son.' "
24 At a lodging place on the way, the LORD met {Moses} [b] and was about to kill him. 25 But Zipporah took a flint knife, cut off her son's foreskin and touched {Moses'} feet with it. [c] "Surely you are a bridegroom of blood to me," she said. 26 So the LORD let him alone. (At that time she said "bridegroom of blood," referring to circumcision.)
27 The LORD said to Aaron, "Go into the desert to meet Moses." So he met Moses at the mountain of God and kissed him. 28 Then Moses told Aaron everything the LORD had sent him to say, and also about all the miraculous signs he had commanded him to perform.
29 Moses and Aaron brought together all the elders of the Israelites, 30 and Aaron told them everything the LORD had said to Moses. He also performed the signs before the people, 31 and they believed. And when they heard that the LORD was concerned about them and had seen their misery, they bowed down and worshiped.

Moses receives the blessing from his father-in-law to go back to Egypt with his daughter and grandsons. God even reassures Moses that all who wanted to kill him have died. God does tell Moses that He will harden Pharoah's heart and he will not let the people go immediately.

It appears that in vs. 24 the Lord was about to kill Moses until Zipporah his wife circumcise his son. It says in my notes that Zipporah sensed divine displeasure so she took matters into her own hands. Moses seems to really be walking a thin line with God. He questions him over and over and now this. This passage ends with Moses meeting Aaron and then go tell the people all the miraculous signs I've given you. They bowed down and worshipped.

For ME: How many times have we skirted God's wrath? If Zipporah hadn't intervened would God really have killed Moses. Was he REALLY going to kill Moses and Zipporah's actions changed God's mind? When I lost my friend this summer in an accident involving an intoxicated driver was this a consequence of this friend being so far outside the will of God and being unusable? If God can't use me anymore will he take me? I pray that I am still reaching people for Christ through my actions, friendships and future teachings.