The true Church of Jesus Christ is built upon the true gospel, and as a result will bring forth good fruits (compare Matthew 7:20). Gifts of the Spirit and the blessings of authorized priesthood ministrations are poured out by God upon the Church as a blessing to the Saints and as sign of his acceptance of it.
A church that is not built upon the Lord’s true gospel may have temporary success, produce some good works, and possess some spiritual fruits, given through the grace of God to bless his children and to lead them to the truths and salvation that are available only through his true church and kingdom.
Ultimately, however, those churches and organizations that are not built upon Christ’s gospel and are without his authorization and approval-that however well intentioned are in doctrinal error-overthrown by the power of God. There is but one way to the Father, and that is through Christ and his gospel. The works of the wicked and the labors of man are not acceptable to God outside of the parameters of the gospel because “a man being evil cannot do that which is good; for if he offereth a gift, or prayeth unto God ... and not with real intent of heart ... it profiteth him nothing, for God receiveth none such” (Moroni 7:6, 9).