Romans 8:28 (NIV)
28And we know that in all things God works for the good of those who love him, who have been called according to his purpose.
Matthew 21:22 (NIV)
22If you believe, you will receive whatever you ask for in prayer.”
1 John 5:14-15 (NIV)
14This is the confidence we have in approaching God: that if we ask anything according to his will, he hears us.
15And if we know that he hears us–whatever we ask–we know that we have what we asked of him.