The prayer of a righteous man is powerful and effective. 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.
Powerful and effective. What an encouragement to continue praying. Sometimes the answer is a long time coming and we need to remind ourselves that God is listening, that he is acting on our behalf. He may be working in ways that we cannot see, or he may be waiting for the right time to act. But he is always with us, always listening, always teaching and changing us through our own prayers and desires.