'Shall' in the Bible

So the captain came up to him and said, “How can you stay asleep? Get up! Call on your god! Perhaps your god will give a thought to us so that we will not perish.”

Then said they unto him, What shall we do unto thee, that the sea may be calm unto us? for the sea wrought, and was tempestuous.

And he said unto them, Take me up, and cast me forth into the sea; so shall the sea be calm unto you: for I know that for my sake this great tempest is upon you.

Arise, go to Nineveh, the great city, and preach unto it the preaching that I shall bid thee.

And Jonah began to enter into the city a day's journey, and he cried, and said, Yet forty days, and Nineveh shall be overthrown.

And he had a proclamation made, and said, "In Nineveh, by a decree of the king and his nobles: "No human being or animal, no herd or flock, shall taste anything! They must not eat, and they must not drink water!

Who knows, God may turn and relent and withdraw His burning anger so that we will not perish.”