Matthew 7:9
Which of you, if his son asks for bread, will give him a stone?
What it says
Jesus asks whether a father would answer a request for bread with a stone.
What it is doing
The verse draws on ordinary parental care.
In context
7Ask, and it will be given to you; seek, and you will find; knock, and the door will be opened to you. 8For everyone who asks receives; he who seeks finds; and to him who knocks, the door will be opened. 9Which of you, if his son asks for bread, will give him a stone? 10Or if he asks for a fish, will give him a snake? 11So if you who are evil know how to give good gifts to your children, how much more will your Father in heaven give good things to those who ask Him! 12In everything, then, do to others as you would have them do to you. For this is the essence of the Law and the Prophets.