God himself was once as we are now, and is an exalted man, and sits enthroned in yonder heavens! That is the great secret.... It is the first principle of the Gospel to know for a certainty the Character of God, and to know... that he was once a man like us.... Here, then, is eternal life - to know the only wise and true God; and you have got to learn how to be Gods yourselves... the same as all Gods have done before you.
Joseph Smith, Jr.Stand Fast Through the Storms of Life. "You will have all kinds of trials to pass through. And it is quite as necessary for you to be tried as it was for Abraham and other men of God... God will feel after you, and He will take hold of you and wrench your very heart strings and if you cannot stand it you will not be fit for an inheritance in the Celestial kingdom of God" -John Taylor recalls the words of Joseph Smith to the Twelve. JS manual page 231
Joseph Smith, Jr.