How do we know that Elijah's prayer was effective?

Elijah’s prayer is a significant example in Scripture that demonstrates how earnest prayer can yield powerful outcomes. According to James 5:17-18, Elijah prayed earnestly that it would not rain, and it did not rain on the earth for three years and six months. His prayer was followed by another earnest plea, leading to rain. This effectiveness showcases not only the power of prayer but also the importance of a righteous standing before God; Elijah was described as a man subject to like passions as us but was justified through his faith in God.