Here are some Scripture references that concern taking the life of an unborn child:
Exodus 21:22-25: This passage speaks of hurting a woman with a child so that her fruit departs and then states that if any harm follows, you shall give life for life.
13 For you created my inmost being;
you knit me together in my mother’s womb.
14 I praise you because I am fearfully and wonderfully made;
your works are wonderful,
I know that full well.
15 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.
16 Your eyes saw my unformed body;
all the days ordained for me were written in your book
before one of them came to be.
The word of the LORD came to me, saying,
“Before I formed you in the womb I knew you,
before you were born I set you apart;
I appointed you as a prophet to the nations.”
Archangel Gabriel said in Luke 1:15: “He shall be filled with the Holy Spirit even from his mother’s womb.”
Luke 1:24-56; see verse 41, where Elizabeth’s baby leaped in her womb when she heard the salutation of Mary and verse 44, where Elizabeth said, “The baby leaped in my womb for joy.”
This is what the LORD says–
he who made you, who formed you in the womb,
and who will help you:
Do not be afraid, Jacob, my servant,
Jeshurun, whom I have chosen.
Listen to me, you islands;
hear this, you distant nations:
Before I was born the LORD called me;
from my mother’s womb he has spoken my name.
Biblically it appears that the killing of an unborn child is equivalent to murder. See Exodus 21, that God knows the unborn child before it is born; Psalms 139 and 51, Jeremiah 1, and Luke 1, that the unborn child is very much a child.