Joseph Fielding Smith Jr., Doctrines of Salvation, Vol.1, p.69 - p.70:
THE STRAITNESS OF THE WAY. Mortality is the testing or proving ground for exaltation to find out who among the children of God are worthy to become Gods themselves, and the Lord has informed us that "few there be that find it."
Joseph Fielding Smith Jr., Doctrines of Salvation, Vol.1, p.97 - p.98:
ALL EXALTED MEN BECOME GODS. To believe that Adam is a god should not be strange to any person who accepts the Bible. When Jesus was accused of blasphemy because he claimed to be the Son of God, he answered the Jews: "Is it not written in your law, I said, Ye are gods? If he called them gods, unto whom the word of God came, and the scripture cannot be broken; Say ye of him, whom the Father hath sanctified, and sent into the world, Thou blasphemest; because I said, I am the Son of God?"
Joseph Smith taught a plurality of gods, and that man by obeying the commandments of God and keeping the whole law will eventually reach the power and exaltation by which he also will become a god.
Joseph Fielding Smith Jr., Doctrines of Salvation, Vol.2, p.39:
SONS OF GOD BECOME GODS. If the faithful, who keep the commandments of the Father, are his sons, then they are heirs of the kingdom and shall receive of the fulness of the Father's glory, even until they become like the Father. And how can they be perfect as their Father in heaven is perfect if they are not like him? . . . And if they receive his fulness and his glory, and if "all things are theirs, whether life or death, or things present, or things to come, all are theirs," how can they receive these blessings and not become gods? They cannot.
Joseph Fielding Smith Jr., Doctrines of Salvation, Vol.2, p.48:
The Father has promised us that through our faithfulness we shall be blessed with the fulness of his kingdom. In other words we will have the privilege of becoming like him. To become like him we must have all the powers of godhood; thus a man and his wife when glorified will have spirit children who eventually will go on an earth like this one we are on and pass through the same kind of experiences, being subject to mortal conditions, and if faithful, then they also will receive the fulness of exaltation and partake of the same blessings. There is no end to this development; it will go on forever. We will become gods and have jurisdiction over worlds, and these worlds will be peopled by our own offspring. We will have an endless eternity for this.
Encyclopedia of Mormonism, Vol.2:
GODHOOD
Logically and naturally, the ultimate desire of a loving Supreme Being is to help his children enjoy all that he enjoys. For Latter-day Saints, the term "godhood" denotes the attainment of such a state—one of having all divine attributes and doing as God does and being as God is. Such a state is to be enjoyed by all exalted, embodied, intelligent beings (see Deification; Eternal Progression; Exaltation; God; Perfection). The Church of Jesus Christ of Latter-day Saints teaches that all resurrected and perfected mortals become gods (cf. Gen. 3:22; Matt. 5:48). They will dwell again with God the Father, and live and act like him in endless worlds of happiness, power, love, glory, and knowledge; above all, they will have the power of procreating endless lives. Latter-day Saints believe that Jesus Christ attained godhood (see Christology) and that he marked the path and led the way for others likewise to become exalted divine beings by following him (cf. John 14:3).