Prayer is powerful. In Matthew 7:7-8, Jesus said, "Ask and it will be given to you; seek and you will find; knock and the door will be opened to you. For everyone who asks receives; he who seeks finds; and to him who knocks, the door will be opened."
When a child asks his or her parents for something, they will usually do almost anything just to answer the child's request. For example, if a baby starts crying for food, a good parent will drop everything in order to feed the little child.
When you ask your parents for something, they will probably be quite eager to help you. The Bible says that God is our heavenly Father—the best possible father. So, how much more do you think God is looking to answer your prayers?
Therefore, if you need to hear from God, "ask and it will be given to you."
James 5:16 says that "The prayer of a righteous man is powerful and effective." Then, James gives an example of the power of prayer: "Elijah was a man just like us. He prayed earnestly that it would not rain, and it did not rain on the land for three and a half years. Again he prayed, and the heavens gave rain, and the earth produced its crops" (James 5:17-18). That's amazing power. But what gave Elijah such power? Prayer.
It is no wonder that in Matthew 21:21, Jesus said, "I tell you the truth, if you have faith and do not doubt, not only can you do what was done to the fig tree, but also you can say to this mountain, 'Go, throw yourself into the sea,' and it will be done."
Prayer is powerful. When you have unwavering faith in God, He will answer your prayers. That's why you stand tallest on your knees.