James Little said Adam is our Father and God and Franklin D. Richards said it has only been revealed in this dispensation.
"Minutes of the Special General Council of the Authorities of the Church of Jesus Christ of Latter-day Saints in the British Isles," The Latter-day Saints' Millennial Star 16, no. 34 (August 26, 1854): 530, 534
[James A. Little]: My very heart bled when I heard the Presidents say there were thousands of poor souls who had never heard the principles of salvation, but there were no means to support the Elders. Great God! has it come to this, that the paltry dollar stands in the way of saving the people! This grieves me to the heart. I can see no other way of doing the work, than to keep the idea before the mind that there is a god in Israel, and that we are his servants. I believe in the principle of obedience; and if I am told that Adam is our Father and our God, I just believe it. Brethren, I feel well, and have felt well all the time.
. . .
[F. D. Richards]: Concerning the item of doctrine alluded to by Elder Caffall and others, viz., that Adam is our Father and God, I have to say do not trouble yourselves, neither let the Saints be troubled about that matter. The Lord has told us in a revelation which he gave through the Prophet Joseph, January 19, 1841—"I deign to reveal unto my Church things which have been kept hid from before the foundation of the world, things that pertain to the dispensation of the fulness of times." (Doc. and Cov. sec. ciii. 13.) I would like to know where you will find Scripture to prove those things by, which have never been revealed. Some seem to feel it their bounden duty to prove everything which belongs to our faith from the Bible, but I do not, and I will excuse you from all obligation to prove this from the old Scriptures, for you cannot, if you try. You may bring much collateral evidence from the Bible and other revelation that you will dissipate objections, and serve to strengthen the position, but to directly and substantially prove it, as the world require, and as we can do the first principles, it will puzzle you to do it, and from henceforth we may expect more and more of the word of the Lord giving us instructions which are nowhere written in the old Scriptures.