“As man now is, God once was:
As God now is, man may be.”
Nature of God (see also: God in Mormonism)
http://lds.org/ensign/1982/02/i-have-a-question/i-have-a-question?lang=eng
Is President Lorenzo Snow’s oft-repeated statement—“As man now is, God once was; as God now is, man may be”—accepted as official doctrine by the Church?
I Have a Question
Lund, Gerald N.
February
1982
Ensign