The Lord is always available to reveal Himself.
In the story of Elijah and the prophets of Baal, Elijah was sure God would answer. He had a history of experience with God and he knew God was watching, was listening to his prayer and would send the fire.
Then, the fire fell from heaven:
"At the time of the offering of the evening sacrifice, Elijah the prophet came near and said, O Lord, the God of Abraham, Isaac, and Israel, let it be known this day that You are God in Israel and that I am Your servant and that I have done all these things at Your word.
Hear me, O Lord, hear me, that this people may know that You, the Lord, are God, and have turned their hearts back [to You].
Then the fire of the Lord fell and consumed the burnt sacrifice and the wood and the stones and the dust, and also licked up the water that was in the trench.
When all the people saw it, they fell on their faces and they said, The Lord, He is God! The Lord, He is God!
I Kings 18: 36-39 (Amplified Bible)
The work of the Lord is marked by the requests of His people in prayer and His faithful response. The story is so familiar to us that it is easy to overlook the security Elijah had in God. The power of the fire was more than able to burn the meant to the extent that it licked up all of the water.
Today, God's fire is still a consuming fire. When His Own pray in agreement with His Word, He will send the flames of heaven to reveal who He is.
Soldier of The Cross, Elijah was just one person. One person who knew God. One person who was willing to represent Him.
There is no mistaking God's work and His Presence. When prayer makes way for the Lord, His majestic fire descends upon the hearts of men and He is revealed.
Always.