1 John 5:14 And this is the confidence that we have in him, that, if we ask any thing according to his will, he heareth us:
1 John 5:15 And if we know that he hear us, whatsoever we ask, we know that we have the petitions that we desired of him.
If you want to be sure to get answers to your prayers, follow the instruction that John has provided in this passage. This is another good passage to memorize. It is also a wonderful prayer promise.