Gabriel said to Mary: “the Lord God shall give unto him the throne,” Jesus received divine appointment. He is the only one who fulfilled both Old Testament requirements. Since He, by virtue of His Resurrection, now lives forever, He will have no successors. At this point Mary raised a question: How shall this be, seeing I know not a man? (v. 34). Zacharias’ question was different: Whereby shall I know this? or “How can I be sure this is going to be so?” Zacharias’ question
Volume 127, Page 18