One important event was the showdown on Mount Carmel with the prophets of Baal. Elijah proved the power of his God by having fire come down from heaven. Another was when he was fed by ravens in the wilderness.
The encounter on Mount Carmel was crucial. Elijah challenged the false prophets and showed the supremacy of the true God. Also, his interaction with the widow at Zarephath was significant. He performed a miracle there, multiplying her oil and flour. And his being taken up to heaven in a whirlwind was a very important part of his life story.
Well, the competition on Mount Carmel is perhaps the most well - known. Elijah not only demonstrated the power of God but also had the false prophets killed. His time with the widow was also important as it showed God's care for the needy. And his ascension, which was a miraculous end to his earthly life, is also a key event in his life story. It was a sign of his special relationship with God and his significance in the religious narrative.