This is from Awake 3/8/93 pg 26
The Bible’s view may be found at Leviticus 18:20, which says: "You must not give your emission as semen to the wife of your associate to become unclean by it." There is no Biblical basis for making a distinction between insemination by intercourse and insemination artificially by donor implantation. Therefore, in either case, fornication or adultery is committed when insemination is accomplished by a male other than the woman’s legal husband.What about gestational surrogacy? This too defiles the marriage bed. True, the fertilized egg would be a union of the husband and his wife, but it is thereafter placed in the womb of another woman and, in fact, makes her pregnant. This pregnancy is not the result of sexual relations between the surrogate woman and her own husband. Thus, her reproductive organs are now being used by someone other than her own mate. This is inconsistent with the Bible’s moral principles that a woman bear a child for her own husband. (Compare Deuteronomy 23:2.) It would not be proper for a man other than the surrogate’s own husband to make use of her reproductive organs. It is an improper use of the marriage bed. Thus, surrogate motherhood is not for Christians.
I wonder if anyone has ever been DF for adultery for having fertility treatments.