Luke 11:9-10, 13

So it is with your prayers. Ask and you’ll receive. Seek and you’ll discover. Knock on heaven’s door, and it will one day open for you. Every persistent person will receive what he asks for. Every persistent seeker will discover what he needs. And everyone who knocks persistently will one day find an open door.

If imperfect parents know how to lovingly take care of their children and give them what they need, how much more will the perfect heavenly Father give the Holy Spirit’s fullness when his children ask him.”