'Down' in the Bible

But Jonah ran away to Tarshish to escape from the presence of the Lord [and his duty as His prophet]. He went down to Joppa and found a ship going to Tarshish [the most remote of the Phoenician trading cities]. So he paid the fare and went down into the ship to go with them to Tarshish away from the presence of the Lord.

Then the sailors were afraid, and each man cried out to his god; and to lighten the ship [and diminish the danger] they threw the ship’s cargo into the sea. But Jonah had gone below into the hold of the ship and had lain down and was sound asleep.

“I descended to the [very] roots of the mountains.The earth with its bars closed behind me [bolting me in] forever,Yet You have brought up my life from the pit (death), O Lord my God.