'Be of Good Cheer' in the Bible

The night following God stood by him, and said, "Be of good cheer Paul: For as thou hast testified of me in Jerusalem, so must thou bear witness at Rome."

And now I exhort you to be of good cheer, for there shall be no loss of any man's life among you: save of the ship only.

Wherefore, sirs, be of good cheer: for I believe God that so it shall be even as it was told me;