In the context of the Bible, “the grand sea ” was the Great Sea, or the Mediterranean, and“ the holy mountain ” was Zion, of which Jehovah said: “I, even I, have installed my king upon Zion, my holy mountain. ”
ויטע אוהלי אַפַּדְנוֹ בין ימים [הים הגדול] להר צבי קודש ” (‏ דניאל י ” א: ​ 44, 45‏) .‏