Exodus 3:1-10  (NIV)

3 Now Moses was tending the flock of Jethro his father-in-law, the priest of Midian, and he led the flock to the far side of the wilderness and came to Horeb, the mountain of God.

2 There the angel of the Lord appeared to him in flames of fire from within a bush. Moses saw that though the bush was on fire it did not burn up.

3 So Moses thought, “I will go over and see this strange sight—why the bush does not burn up.”

4 When the Lord saw that he had gone over to look, God called to him from within the bush, “Moses! Moses!”

And Moses said, “Here I am.”

5 “Do not come any closer,” God said. “Take off your sandals, for the place where you are standing is holy ground.”

6 Then he said, “I am the God of your father, the God of Abraham, the God of Isaac and the God of Jacob.” At this, Moses hid his face, because he was afraid to look at God.

7 The Lord said, “I have indeed seen the misery of my people in Egypt. I have heard them crying out because of their slave drivers, and I am concerned about their suffering.

8 So I have come down to rescue them from the hand of the Egyptians and to bring them up out of that land into a good and spacious land, a land flowing with milk and honey—the home of the Canaanites, Hittites, Amorites, Perizzites, Hivites and Jebusites.

9 And now the cry of the Israelites has reached me, and I have seen the way the Egyptians are oppressing them.

10 So now, go. I am sending you to Pharaoh to bring my people the Israelites out of Egypt.”

Mark 9:17-26 (NIV)

17 A man in the crowd answered, “Teacher, I brought you my son, who is possessed by a spirit that has robbed him of speech.

18 Whenever it seizes him, it throws him to the ground. He foams at the mouth, gnashes his teeth and becomes rigid. I asked your disciples to drive out the spirit, but they could not.”

19 “You unbelieving generation,” Jesus replied, “how long shall I stay with you? How long shall I put up with you? Bring the boy to me.”

20 So they brought him. When the spirit saw Jesus, it immediately threw the boy into a convulsion. He fell to the ground and rolled around, foaming at the mouth.

21 Jesus asked the boy’s father, “How long has he been like this?”

“From childhood,” he answered.

22 “It has often thrown him into fire or water to kill him. But if you can do anything, take pity on us and help us.”

23 “‘If you can’?” said Jesus. “Everything is possible for one who believes.”

24 Immediately the boy’s father exclaimed, “I do believe; help me overcome my unbelief!”

25 When Jesus saw that a crowd was running to the scene, he rebuked the impure spirit. “You deaf and mute spirit,” he said, “I command you, come out of him and never enter him again.”

26 The spirit shrieked, convulsed him violently and came out. The boy looked so much like a corpse that many said, “He’s dead.”