We gain confidence through spending time with Him.
Jeremiah 33:3 Call unto me, and I will answer thee, and show thee great and mighty things, which thou knowest not. (YOU HAVE TO OPEN YOUR MOUTH AND PRAY)
1John 5:14,15 And this is the confidence that we have in him, that, if we ask any thing according to his will, he heareth us: 15 And if we know that he hear us, whatsoever we ask, we know that we have the petitions that we desired of him.
(CONFIDENCE IN OUR FAITHFUL FATHER GOD!!)
Mark 11:24 "Therefore I say unto you, What things whatsoever ye desire, when ye pray, believe that ye receive them, and ye shall have them."
(BELIEVE WHEN YOU PRAY!)