I completely agree with both Rae and Feinberg regarding this issue. From a biblical perspective, the answer to this question is simple. No, abortion is never right because God's word demonstrates that the unborn fetus is indeed a person, not merely protoplasm so then abortion is nothing less than murder (Genesis 9:6; Exodus 20:13) Having said this, I also must acknowledge that though the answer is simple, this specific situation is not an easy one.
When advising these believing parents with reference to whether taking the "morning after pill" or early term abortion is an ethical decision or not, I'd like to refer to my acrostic for ethical decision making What Would Christ Do?
First and foremost, I, along with the parents and their daughter, would go to the Lord in prayer to ask the Holy Spirit to guide us in this decision. To give the wisdom and the strength that only He can give in any situation.
From there I would begin by asking What's your theory? The theory is that life begins at conception. As Rae states, there are numerous examples of where the Bible uses conception and birth interchangeably (Job 3:3; Ex. 10:11; Deut. 22:5; Jer. 1:5; Is. 49:1; Ps. 139: 13-16) Next is What are the facts? The facts are: 1.) Tragically, their teenage daughter was raped and 2.) no one is certain whether she will become pregnant or not.
When Counting the cost, it should be established that as believing parents, this issue should be seen from a biblical perspective. Whether their daughter is pregnant or not, I feel that as the body of Christ we are to lovingly support the family spiritually and emotionally as well. We are to lift them up in prayer to our Heavenly Father for healing and restoration through this difficult time. If pregnancy is uncertain I would state that taking the "morning after pill" or considering an early term abortion is completely unethical based on biblical principle. I would also like to note that the whole situation is traumatic, frightening, even emotionally debilitating whether pregnant or not. But, if indeed their daughter is pregnant and they consider abortion, who's to say that the toll that that would take spiritually, emotionally and physically wouldn't be the same if not worse?
I would state that a child is a blessing and always welcome regardless of the means because it is a gift from God and there is a purpose for our pain even if we cannot see past it. That suffering is not for nothing when Jesus Christ is the Lord, the Savior and the Redeemer of your life. I would offer the congregations support in raising up this baby in a Godly environment because I firmly believe that we all are accountable when it comes to raising children to love the Lord and follow His commands. I would also suggest the alternative of adoption because so many couples are unable to bear children yet would love and welcome a child, any child.
Lastly, the decision would need to be made. It would be my hope and prayer that the family would align themselves with the will of the Lord and seek His counsel. That the decision would bring Glory to our Father in heaven who loves us and guides us and is our refuge and strength and a very present help in times of trouble. I would recall the words of Paul in Romans 8:28 "And we know that all things work together for good to them that love God, to them who are the called according to his purpose.