Jonah 1:11,12

Then said they, What shall we do unto thee, &c. They perceived that Jonah was a prophet of the Lord, and therefore they would not do any thing to him without consulting him. He appeared to be a delinquent, but he appeared also to be a penitent: and therefore they would not insult over him, or offer him any rudeness. They would not cast him overboard, if he could think of any other expedient by which to save the ship. And he said, Take me up, and cast me into the sea It is probable the conviction in Jonah's mind of his guilt was so strong, at this time, as to make him certain that God had raised this tempest on his account; or he might have a revelation from God that it was so: in either case he might think it his duty to offer himself to death to save the rest that were in the ship. For if it be lawful, and even praise worthy for one man, though guiltless, to sacrifice his life to save the lives of many; how much more may and ought a person to do this who knows that he is the cause of imminent danger, which threatens immediate destruction to many others.