The bible says in Jonah 1, the bible says that each man called out to His own god to save them from the raging sea, but only when they threw Jonah out did the sea calmly.
Jonah 1:16 KJV Then the men feared the LORD exceedingly, and offered a sacrifice unto the LORD, and made vows.
At times, it takes a miracle and a wonder for people to know the true God.
Luke 5:8 KJV When Simon Peter saw it, he fell down at Jesus’ knees, saying, Depart from me; for I am a sinful man, O Lord.
This is why we need God to reveal himself in any situation and in every place we go. Because it is not by our excellency of speech but in the demonstration of Spirit and Power.
1Co 2:4 KJV And my speech and my preaching were not with enticing words of man’s wisdom, but in demonstration of the Spirit and of power:
1Th 1:5 KJV For our gospel came not unto you in word only, but also in power, and in the Holy Ghost, and in much assurance; as ye know what manner of men we were among you for your sake.