If we are in the line of our duty, we are engaged in a great and glorious cause. It is very essential to our individual welfare that every man and every woman who has entered into the covenant of the Gospel, through repentance and baptism, should feel that as individuals it is their bounden duty to use their intelligence, and the agency which the Lord has given them, for the promotion of the interests of Zion and the establishment of her cause, in the earth. Those who are not faithful in the discharge of these duties cannot be wholly acceptable to God; for they are more or less in the condition of the Church which was complained of by the angel to the Apostle John, as being neither hot nor cold, but lukewarm, and therefore only fit to be “spewed out,” or to be disowned of God.
– Joseph F. Smith, April 1876 General Conference