Why do you still come timidly before my throne? Do not believe the lies of the enemy who has told you that I am not a good father. Come to me with boldness before my throne. As my righteous son and daughter, holy and blameless in my sight, be confident that I hear your prayers. Believe and pray with confidence and receive the blessings and favour of a good father.

1 John 5:14-15
This is the confidence we have in approaching God: that if we ask anything according to his will, he hears us. And if we know that he hears us—whatever we ask—we know that we have what we asked of him.