[President Joseph F. Smith]
...You all know that your fathers are indeed your fathers and that your mothers are indeed your mothers you all know that don't you? You cannot deny it. Now, we are told in scriptures that Jesus Christ is the only begotten Son of God in the flesh. Well, now for the benefit of the older ones, how are children begotten? I answer just as Jesus Christ was begotten of his father. The Christian denominations believe that Christ was begotten not of God but of the spirit that overshadowed his mother. This is nonsense. Why will not the world receive the truth? Why will they not believe the Father when he says that Jesus Christ is His only begotten Son? ...
Now, little boys and girls, when you are confronted by infidels in the world who know nothing of how Christ was begotten, you can say he was born just as the infidel was begotten and born, so was Christ begotten by his Father, who is also our Father-the Father of our spirits-and he was born of his mother Mary.
... Now, my little friends, I will repeat again in words as simple as I can, and you talk to your parents about it, that God, the Eternal Father is literally the father of Jesus Christ.
Mary was married to Joseph for time. No man could take her for eternity because she belonged to the Father of her divine Son.
[1914-December 20-The Box Elder News, January 28, 1915 as quoted in Clark, James R., Messages of the First Presidency (6 volumes)]