Jonah 1:10

10Then the men became extremely frightened and said to him, “How could you do this?” For the men knew that he was running from the presence of the Lord, 1:10 Jonah probably had informed them when he first boarded (cf v 3) but they may not have taken him seriously, or perhaps they were just indifferent to his reason for the voyage. Now that they were in mortal danger, they believed him.because he had told them.