Steve Gregg looks into Jesus' teaching on persistence in prayer.
New King James Version (NKJV)
Keep Asking, Seeking, Knocking
7 “Ask, and it will be given to you; seek, and you will find; knock, and it will be opened to you.8 For everyone who asks receives, and he who seeks finds, and to him who knocks it will be opened.9 Or what man is there among you who, if his son asks for bread, will give him a stone?10 Or if he asks for a fish, will he give him a serpent?11 If
you then, being evil, know how to give good gifts to your children, how
much more will your Father who is in heaven give good things to those
who ask Him!12 Therefore, whatever you want men to do to you, do also to them, for this is the Law and the Prophets.