Why did Moses not fully disclose to Jethro why he was leaving Midian? Why did God tell Moses to perform miraculous signs before Pharaoh when God also said he was going to harden Pharaoh's heart? Why was the Lord about to kill Moses shortly after he sent him on His mission? These are hard questions to answer, but they begin to make sense when we consider the theme of divine sonship- that God adopts us as His sons and daughters by grace, ultimately through His perfect Son, the Lord Jesus Christ.