The following are references to Mary, even after the miraculous conception and birth of Jesus, is referred to as being a “virgin” from early Latter-day Saint literature; it shows that the “Mormons believe God had sex with Mary!” claim is, again, without any meaningful merit (it is classical “yellow journalism”):
Who was Jesus Christ? Why, He is called the babe of Bethlehem. He was once a babe, then? Yes. He was born of the Virgin Mary. (George Q. Cannon; Collected Discourses 1:233-34)
If ever, there was a time when there was need for the testimony of these men that are sent out, these seventies, these elders, testifying for Jesus, standing for Jesus; the miraculous Jesus, the Jesus who was begotten by His Father, the Lord God Almighty, and born of the virgin Mary--the Jesus of miraculous birth and miraculous life. (Charles W. Nibley; Conference Report, April 1911, p. 54)
The second is that he shall be without reservation a Christian, believing that Jesus Christ was in very truth the Son of God, that he was born of the Virgin Mary, and that he lived as the scriptures declare He did. (James E. Talmage; Conference Report, April 1914, p. 95)
He was "the only begotten Son of God," born of the Virgin Mary. (Charles W. Penrose; Conference Report, April 1915, p. 37)
Jesus of Nazareth, born of the virgin Mary, was literally and truly the Son of the Father, the Eternal God, not of Adam. (Charles W. Penrose; Conference Report, April 1916, p. 23)
We know that God is the Lord, and we are perfectly satisfied, I believe, in the truth of the enunciation made by our President this morning, that the Father is a personage, not a mere spiritual imaginary breath, and that Jesus Christ of Nazareth, born of the Virgin Mary, is his only begotten Son in the flesh, and that we are made in their image, as revealed in scripture. (Charles W. Penrose; October 1916, p. 16)
In that vision it was shown unto him that Christ would come upon the earth, and be born of the Virgin Mary. (Daniel G. Miller; Conference Report, october 1916, p. 123)
Many people are growing to believe in Jesus Christ as the veritable Son of God, born of the virgin Mary and begotten of His Father. (G.E. Ellisworth; October 1916, p. 133)
esus was born of the Virgin Mary, and that he fulfilled his earthly mission, and that his life was concluded in the sacrifice that he offered for us and for the world. (William T. Jack; Conference Report, April 1917, p. 114)
It occurs to me that this same Jesus Christ, the Redeemer and the Son of God, to whom the Father introduced the boy, was the same Jesus Christ who lived upon the earth during the meridian of time: that he was the same Christ that was born of the Virgin Mary. He was born of a mortal mother and an immortal father. He lived upon the earth for a short period of time, for about 33 years. He entered upon his ministry; he organized his Church with apostles, and evangelists and so on. In time he gave up his life for the sins of the world. that all the children of our Father in heaven who live today, and who lived at the time of the Savior, or who had lived upon the earth before his day, or shall live after we have passed away, might be saved through obedience to his laws. He gave up his life as a ransom for us all. My brethren and sisters, the Savior who talked with Joseph Smith the boy prophet was the identical Savior, the identical Jesus, who was born of the Virgin Mary, who was crucified upon Calvary's hill, whose body was laid in the tomb, and arose from the tomb on the third day and appeared to his friends and brethren. That identical Jesus Christ who was baptized in Jordan, appeared to Joseph Smith and gave him the necessary instruction for the founding of his Church in our day. (Joseph Reece, Conference Report, October 1918, p. 114)
God was manifest in the flesh, in the personality of Jesus of Nazareth, and he was verily the Son of God, begotten of the Father, and his mother was the virgin Mary. There should be no dispute in regard to this matter, because it has been made so clear and full in the revelations of God to us. (Charles W. Penrose, Conference Report, April 1920, p. 30)
The elements of his body are eternal, and the elements of the spirit are eternal, without beginning; but there was a beginning to his body, when he was born of the virgin Mary, and God was his Father. His power overshadowed the virgin and, as she was told by the angel Gabriel, the offspring was the Son of God. Jesus Christ taught that doctrine to his apostles and made it very plain. (Charles W. Penrose, April 1921, p. 12)
[W]e have an abiding faith in their purport and believe with all our souls that Jesus Christ was born of the Virgin Mary, the Only Begotten of the Father in the flesh, and is therefore the Christ, the Son of the living God. It is also important to believe that during his lifetime he promulgated the plan of life and salvation, and taught the children of men as no one else has ever taught them the glorious principles of eternal life. It is also important that we should believe with all our souls that he gave his life as a ransom for the sins of the whole world, and that his precious blood was spilled as a means of saving mankind from the fall. It is also important that we shall believe with all our souls that on the third day he rose from the dead and overcame death and the grave, and became the first fruits of the resurrection. These are the important things: The observance of these two holy days in commemoration of our Savior's marvelous birth of the Virgin Mary, and his miraculous resurrection from. the dead, is quite general throughout all Christian lands and among the various so-called Christian churches. (Rulon S. Wells, Conference Report, April 1923, p. 124)
Jesus of Nazareth, born of the virgin Mary crucified upon Calvary, and risen from the dead, is the Redeemer of the world. (Athony W. Ivins, Conference Report, October 1923, p. 141)
We believe that Jesus Christ was, and is the Son of God, the Only Begotten of the Father in the flesh, immaculately conceived and born of the Virgin Mary. That through the atonement wrought out by him all men are redeemed from the penalty of death, pronounced upon our father Adam, through the resurrection from the grave, which he made possible, and that by obedience to the divine principles of right living which he taught, mankind may be redeemed from personal sin, and brought back into the presence of the Father, to enjoy the fellowship and association of the Son. (Anthony W. Ivins, Conference Report, October 1925, p. 24)
The Latter-day Saints, one and all, the thousands that gather upon such occasions as this, if the question were put to them and they were asked if they knew and could declare with conviction that Jesus Christ is the Son of the living God, that our eternal Father in heaven, indeed, is his Father, and that he was born of the virgin Mary--every man and woman almost without exception would answer in the affirmative that they know it, because they have received the truth and have abided in the truth, and the truth has made them free. (Joseph L. Lillywhite, Conference Report, October 1925, p. 67)
We believe in the immaculate conception of the Virgin Mary, and that the Child born at Bethlehem of Judea was in very deed the Son of God, the Only Begotten of the Father in the flesh. That he is our advocate with the Father, the medium through which we reach the throne of grace. (Anthony W. Ivins, Conference Report, April 1926, p. 23 [note that Anthony Ivins uses "Immaculate Conception" to refer to the virginal conception, not the Roman Catholic dogma--such an error is rather common, both inside and outside of, Roman Catholicism])
What can we do if we cannot accept such irrefutable evidence? To me their testimonies mean but one thing, and that is that Jesus Christ who was born of the Virgin Mary, who preached the gospel after his own name, who sought the lost ones, whose life as we know it, even from the fragmentary accounts thereof, is an inspiration and has been an inspiration to millions, for two thousand years, who was crucified in ignominy and who was buried: that this same Jesus Christ arose from the grave literally, and that the early Christian church was founded upon that divine fact. (David O. McKay, Conference Report, April 1926, p. 38)
He if was who came in the meridian of time and was born of the Virgin Mary. Thus he was made flesh. This Son of God, the Only Begotten of the Father, full of grace and truth, who now sits at the right hand of the Majesty on High from whence proceedeth the light to fill the immensity of space, even "the light which is in all things, which giveth life to all things, which is the law by which all things are governed, even the power of God who sitteth upon his throne, who is in the bosom of eternity, who is in the midst of all things." (Doc. and Cov. 88:13). (Rulon S. Wells, Conference Report, April 1931, p. 94)
The coming of the children of God to this earth was fundamental, for it was to bring to pass their immortality and eternal life that this world was created, that God sent his Only Begotten Son. From the very beginning we see the purpose in the course of its development. This Son of God was born of the virgin Mary. An angel of the Lord appeared unto her and told her that she was greatly favored among women; that she had found favor with the Lord; that she would conceive and give birth to a son, and should call his name Jesus, and he should be called the Son of God. Said Mary unto this angel, "How shall this be, seeing that I know not a man ?" And the angel replied, "The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee; therefore also that holy thing which shall be born of thee shall be called the Son of God." (Rulon S. Wells, Conference Report, April 1932, p. 67)
Finally, as the holy prophets had predicted, in the Meridian of Time Jesus Christ came into this world. Latter-day Saints accept the doctrine that he was actually and literally the Son, heir in the flesh, of God the Eternal Father. He was born of the Virgin Mary. He was the only man in this life who was born into mortality of the Eternal Father. (Milton R. Hunter, Conference Report, October 1949, pp. 71-72)
Mormonism declares that Jesus Christ lived upon the earth, that he mingled with men, that he preached his powerful Sermon on the Mount to a small group of friends and associates who gathered on a mountainside, that he performed mighty miracles, that he was born of the Virgin Mary, that he was put to death on the cross by his enemies, that he arose from the grave on the third day after his crucifixion, and finally, that he is the Son of God. Mormonism also declares that he chose twelve apostles, that he commissioned them to preach the gospel of salvation which he had taught them, and that like him they performed many miracles in his name and established his Church upon the earth. (Alma Sonne, Conference Report, April 1958, p. 53)
Members of the true Church are aware that Jesus Christ is the Creator of heaven and earth and is the way to peace on earth and goodwill to men. They marvel at the beauty of his creations, and they accept his divine leadership and agree with Paul the Apostle that Jesus is also the author of the plan of life and salvation. "Mormonism" declares to all the world that Jesus Christ lived upon the earth in the meridian of time; that he preached the Sermon on the Mount to a small group of friends and followers who had gathered on a mountainside to hear him; that he performed many mighty miracles, that he was born of the virgin Mary, that he was crucified on the cross by his enemies who were inspired by disgruntled religious leaders of his day, that he arose the third day from a borrowed grave where he was buried, and finally that he is the Son of God, the Messiah, about whom the prophets of Israel spoke. (Alma Sonne, Conference Report, October 1965, p. 36)
It was he then who came to this earth, in the meridian of time, born of the virgin Mary. He was the literal Son of God the Father, "the Only Begotten Son." (Eldred G. Smith, Conference Report, April 1968, p. 43)
Even our great Redeemer, whose death and sufferings we are this afternoon celebrating, was born up in yonder world before he was born of the Virgin Mary. (Orson Pratt, November 12, 1876; JOD 18:290)
Our Lord and Savior Jesus Christ was born of the Virgin Mary, the Scriptures tell us; and she bare record of it, and there were many witnesses of this fact, and the record teaches us that he was begotten by the power of God, and not of man, and that she had no intercourse with mortal man in the flesh until after she gave birth to the Savior, who is called the Son of God. I will also say that Adam was called the Son of God. (Erastus Snow, March 4, 1878; JOD 19:271)