1) Elijah prayed earnestly for no rain, and no rain fell for 3.5 years.
2) Elijah climbed to the top of a mountain and prayed humbly on his knees for rain.
3) Elijah had his servant check for rain 7 specific, persistent times.
4) On the 7th check, the servant saw a small cloud, and Elijah expected rain, telling Ahab to hurry before it stopped. Rain then fell heavily.