Just as contraceptive sex is wrong because it divides what God intended to be integrated (love and life; unitive and procreative), so, too, conception outside the womb is equally wrong for the same reasons. There is no absolute right to have sex whenever and with whomever, and neither is there an absolute right to become a parent. While marrieds should be open to the possibility of children, no one has an inalienable right to be a father or mother. A child is a gift from God, not a commodity or bargaining chip.
Medical procedures which enhance and promote the natural biological process within the woman to have her egg fertilized by the husband’s sperm must take place within the context of the married sex act and not in a test tube or Petri dish. In vitro fertilization not only takes the eggs and sperm from the bodies of the parents and conceives a human being in a test tube, but the procedure also takes more than one egg and fertilizes it so that there are several embryos conceived artificially. Each one has an immortal soul and is a human person. In vitro uses the “best” pick of the litter and discards or freezes the remaining embryos, each of which is a unique human being.
When the Virgin Mary visited her cousin Elizabeth in Luke 1:39–45, Elizabeth was six months pregnant. Her unborn son was John the Baptist. Mary was only a few days pregnant since she “went in haste to visit her cousin.” Both the unborn John the Baptist and the unborn Jesus would be considered “embryos” or “fetuses” today. Yet the unborn John the Baptist leapt in his mother Elizabeth’s womb for joy since he miraculously recognized the presence of the Savior in the womb of his mother Mary.