Pray Upon God's Promises

And said to his servant, Go up now, look toward the sea. And he went up, and looked, and said, There is nothing. And he said, Go again seven times.
And it came to pass at the seventh time, that he said, Behold, there ariseth a little cloud out of the sea, like a man's hand. And he said, Go up, say unto Ahab, Prepare thy chariot, and get thee down that the rain stop thee not. (1 Kings 18:43-44 KJV)

God's word never fail. If our prayer is based on His promises, it will always be answered.