'Ransom' in the Bible

For I am the LORD thy God, the Holy One of Israel, thy Saviour: I gave Egypt for thy ransom, Ethiopia and Seba for thee.

“Why was there no man when I came?When I called, why was there none to answer?Is My hand so short that it cannot ransom?Or have I no power to deliver?Behold, I dry up the sea with My rebuke,I make the rivers a wilderness;Their fish stink for lack of waterAnd die of thirst.