Long before Mary was visited by the angel Gabriel, she was chosen to be the Mother of Jesus Christ. Centuries before Christ was born Isaiah, Nephi, King Benjamin, and Alma all prophesied that the Savior would be born of a virgin, and some of them even called her by name (see Isaiah 7:14, 1 Nephi 11:13-20, Mosiah 3:8, Alma 7:10).
Other than calling her "most beautiful and fair above all other virgins," the ancient prophets also taught that she was a "precious and chosen vessel." Elder Bruce R. McConkie added his testimony of her chosen calling: "As the Father chose the most noble and righteous of all his spirit sons to come into mortality as his Only Begotten in the flesh, so we may confidently conclude that he selected the most worthy and spiritually talented of all his spirit daughters to be the mortal mother of his Eternal Son” (DNTC, Vol. 1, 85).