'Confidence' in the Bible

And they shall be terrified and ashamed of Ethiopia their confidence, and of Egypt their boast.

And the inhabitants of this coast shall say in that day, Behold, such is our confidence, whither we fled for help to be delivered from the king of Assyria; and how shall we escape?

For thus saith the Lord Jehovah, the Holy One of Israel: In returning and rest shall ye be saved, in quietness and confidence shall be your strength; but ye would not.

And Rab-shakeh said to them, Say now to Hezekiah, Thus says the great king, the king of Assyria: What confidence is this in which thou trustest?