Luke 11:5-13 NRSV
And he said to them, “Suppose one of you has a friend, and you go to him at midnight and say to him, ‘Friend, lend me three loaves of bread; for a friend of mine has arrived, and I have nothing to set before him.’ And he answers from within, ‘Do not bother me; the door has already been locked, and my children are with me in bed; I cannot get up and give you anything.’ I tell you, even though he will not get up and give him anything because he is his friend, at least because of his persistence he will get up and give him whatever he needs.
“So I say to you, Ask, and it will be given you; search, and you will find; knock, and the door will be opened for you. For everyone who asks receives, and everyone who searches finds, and for everyone who knocks, the door will be opened. Is there anyone among you who, if your child asks for a fish, will give a snake instead of a fish? Or if the child asks for an egg, will give a scorpion? If you then, who are evil, know how to give good gifts to your children, how much more will the heavenly Father give the Holy Spirit to those who ask him!”
NRSV: New Revised Standard Version