Isaiah 45:22

Upon these considerations, I advise all people upon earth, from one end to the other, to cast away their idols, and to turn their eyes and hearts to me, expecting salvation from me, and from me only; and their labour shall not be in vain; for they shall be saved: the imperative being put for the future, as Genesis 42:18, and oft elsewhere. And this is not only an exhortation to the Gentiles to turn from idols to God, but a prediction that they shall turn to him, and look upon Christ, who shall be the author of salvation to all that obey him, whether Jews or Gentiles, which is confirmed by the following verse.