This is taken from Is Abortion Really So Bad? by Dr. Joel Beeke, a pastor, theologian and seminary professor.
What is the justification for legal abortion? Let us examine the arguments used by those who promote abortion to determine on how strong of a foundation this practice is based.
A Woman Has A Right To Do With Her Body As She Desires.
We affirm a woman’s authority over her body. But there are limits to what we can rightfully do with our bodies, including causing harm to another human being. Abortion involves the death of her child. To argue that the living fetus is part of the mother’s body defies reason: which organ of her body is it? When the unborn child’s heart beats, whose heart is it? When the fetus’s brain waves can be traced, whose brain is it? Every pregnancy involves two people, a mother and a child; the rights of both must be considered.
Whenever we speak of the rights of two human beings, we must guard against the more powerful person taking advantage of the weaker person. It is the responsibility of the powerful to protect the weak. It is especially the responsibility of a mother to protect her child. Does any mother have the right to do whatever she pleases with her children? On the contrary, she has the responsibility of caring for them or seeing that someone else cares for them. Certainly, motherhood calls for sacrifice. We should expect adults to make sacrifices of their resources and freedoms when necessary to preserve the lives of children.