Exodus 17:8-16 (NIV)
The Amalekites Defeated
8 The Amalekites came and attacked the Israelites at Rephidim. 9 Moses said to Joshua, “Choose some of our men and go out to fight the Amalekites. Tomorrow I will stand on top of the hill with the staff of God in my hands.”
10 So Joshua fought the Amalekites as Moses had ordered, and Moses, Aaron and Hur went to the top of the hill. 11 As long as Moses held up his hands, the Israelites were winning, but whenever he lowered his hands, the Amalekites were winning. 12 When Moses’ hands grew tired, they took a stone and put it under him and he sat on it. Aaron and Hur held his hands up—one on one side, one on the other—so that his hands remained steady till sunset. 13 So Joshua overcame the Amalekite army with the sword.
14 Then the Lord said to Moses, “Write this on a scroll as something to be remembered and make sure that Joshua hears it, because I will completely blot out the name of Amalek from under heaven.”
15 Moses built an altar and called it The Lord is my Banner. 16 He said, “Because hands were lifted up against the throne of the Lord, the Lord will be at war against the Amalekites from generation to generation.”
Luke 11:5-13 (NIV)
5 Then Jesus said to them, “Suppose you have a friend, and you go to him at midnight and say, ‘Friend, lend me three loaves of bread; 6 a friend of mine on a journey has come to me, and I have no food to offer him.’ 7 And suppose the one inside answers, ‘Don’t bother me. The door is already locked, and my children and I are in bed. I can’t get up and give you anything.’ 8 I tell you, even though he will not get up and give you the bread because of friendship, yet because of your shameless audacity he will surely get up and give you as much as you need.
9 “So I say to you: Ask and it will be given to you; seek and you will find; knock and the door will be opened to you. 10 For everyone who asks receives; the one who seeks finds; and to the one who knocks, the door will be opened.
11 “Which of you fathers, if your son asks for a fish, will give him a snake instead? 12 Or if he asks for an egg, will give him a scorpion? 13 If you then, though you are evil, know how to give good gifts to your children, how much more will your Father in heaven give the Holy Spirit to those who ask him!”