From the teachings of scripture God views the unborn child as a living human-being and the taking of his or her life would be a violation of the principle “you shall not murder”. Here are some verses on why I take this position.
For You have formed my inward parts; You have covered me in my mother’s womb. I will praise You, for I am fearfully and wonderfully made; marvelous are Your works, and that my soul knows very well. My frame was not hidden from You, when I was made in secret, and skillfully wrought in the lowest parts of the earth. Your eyes saw my substance, being yet unformed. And in Your book they all were written, the days fashioned for me, when as yet there were none of them (Psalm 139:13-16).
(David insisted that his development as a human being—his personhood—was achieved by God, prior to his birth, while he was yet in his mother’s womb)
Jeremiah declared: “Then the word of the Lord came unto me, saying: ‘Before I formed you in the womb I knew you; before you were born I sanctified you; and I ordained you a prophet to the nations’ ” (Jeremiah 1:4-5).
Also, when Mary, the mother of Jesus, made it to Elizabeth’s house, (the mother of John the baptizer). Both women were pregnant at the time. Look what the text says:
Now Mary arose in those days and went into the hill country with haste, to a city of Judah, and entered the house of Zacharias and greeted Elizabeth. And it happened, when Elizabeth heard the greeting of Mary, that the babe leaped in her womb; and Elizabeth was filled with the Holy Spirit. Then she spoke out with a loud voice and said, “Blessed are you among women, and blessed is the fruit of your womb! But why is this granted to me, that the mother of my Lord should come to me? For indeed, as soon as the voice of your greeting sounded in my ears, the babe leaped in my womb for joy” (Luke 1:39-44).
Notice that Elizabeth’s pre-born baby is being represented as a living human being. In fact, the term “baby” used in verses 41 and 44 to refer to the pre-born John is the exact same term that is used in chapter two to refer to Jesus after His birth as He laid in the manger (Luke 2:12,16). So in God’s sight, whether a person is in his or her pre-birth developmental state, or in a post-birth developmental state, that person is still a baby! In Luke 1:36, John the Baptist is referred to as “a son” from the very moment of conception. All three phases of human life are listed in reverse order in Hosea 9:11—birth, pregnancy, and conception. (via. Apologeticspress.com)
From all these passages and more I think you can say with assurance that abortion would be considered by God the murder of a child.
With that being said we have ask “what about someone who has had one, is there any hope?. 100% yes there is still hope for salvation! Some sins, although maybe more disturbing and life changing then others can all be forgiven. If one is truly sorry and penitent of the sin and asks God to forgive them, He will. If God can forgive those who killed His Son Jesus, then He can also forgive one who has committed this sin and remove it from their eternal record.
My advice to one considering the abortion sin is to place the child up for adoption. I would believe that God would be pleased with an individual who knew they could not take of a child and made the decision to give it up to one who could.
My advice to one who has already committed this sin is to come to God and He will forgive you with open arms. Live for Him now and spend eternity in his presence.