What does the Bible say about those that are not yet born?
Psalms 139:13-16: For you created my inmost being; you knit me together in my mother's womb. I praise you because I am fearfully and wonderfully made; your works are wonderful, I know that full well. My frame was not hidden from you when I was made in the secret place. When I was woven together in the depths of the earth, your eyes saw my unformed body. All the days ordained for me were written in your book before one of them came to be.
Abortion: A Reasoned Dialogue - Faith Facts
Often the best way to dialogue with someone on a controversial topic is to respond with a question that helps all parties think about their position. This is the approach taken by this series of 23 questions related to abortion. [Thanks to Justice for All Foundation]