The Bible clearly prohibits the killing of innocent people – found in the Ten Commandments (Exodus 20:13)
The bible clearly considers the unborn to be human beings.
Men and women are made in the image of God (Genesis 1:27)
The moment of creation of the person can be nothing other than the moment of fertilization / conception. Medical textbooks and scientific reference works consistently agree that human life begins at fertilization.
The Hebrew word used in the Old Testament to refer to the unborn (Exodus 21:22-25) is yeled. This word is also used for young children or teens or young adults. The Hebrew people did not have or need a separate word for unborn children. They were just like other children, only younger. There is no such thing as an “almost” child or “potential” child.
Job graphically describes the way God created him before he was born. (Job 10-8-12). The person in the womb was not something that might become Job, but someone who was Job, just a younger version of the same man.
To Isaiah God says, “This is what the Lord says – he who made you, who formed you in the womb.” (Isaiah 44:2).
Psalm 139:13-16 paints a graphic picture of the intimate involvement of God with a preborn person. God created David’s “inmost being”, not at birth but before birth. Each person has been personally knitted together by God in the womb. All the days of his life have been planned out by God before any have come to be (Psalm 139:16)
Each person has a sinful from the point of fertilization / conception. (Psalm 51:5) Who but an actual person can have a sinful nature?
When Rebekah was pregnant with Jacob and Esau, Scripture says, “The babies jostled each other within her.” (Genesis 25:22). The unborn were regarded as “babies” in the full sense of the term.
God tells Jeremiah, “I knew you in the womb” (Jeremiah 1:5). To know him must mean that Jeremiah was a person in the womb.
In Luke 1:41,44 there are references to the unborn John the Baptist. The word translated “baby” in these verses is the Greek word brephos. It is the same word used for the already born baby Jesus (Luke 2:12-16) and for the babies brought to Jesus to receive his blessing (Luke 18:15-17). It is also the same word used in Acts 7:19 for the newborn babies killed by Pharaoh. To the writers of the New Testament, like the Old, whether born or unborn a baby is simply a baby.
The preborn John the Baptist responded to the presence of the preborn Jesus in his mother Mary, when Jesus was probably no more than ten days beyond conception (Luke 1:41)
The angel Gabriel told Mary that she would be “with child and give birth to a son” (Luke 1:31). She was pregnant “with child”, not that “which might become a child”
A proper understanding of Exodus 21:22-25 shows the reference is not to a miscarriage but to a premature birth, and that the injury referred to, which is to be compensated for like all other injuries, applies to the child as well as the mother. This in fact grants the unborn child a status in the eyes of the law equal to the mother’s.
There is no legislation in Biblical law about abortion. It was unthinkable. All that was necessary to prohibit an abortion was the command, “You shall not murder” (Exodus 20:13). Every Israelite knew that the preborn child was indeed a child. Miscarriage was always viewed as the loss of a child, and abortion as the killing of a child.
Child sacrifice is condemned throughout Scripture. Only the most degraded societies tolerated such evil. Unlike the pagan sacrifices, with abortion, child-killing need no longer be postponed till birth. Thousands of dead babies discarded by modern abortion clinics has striking similarities as ancient dumping grounds of child sacrifices
Scripture condemns the shedding of innocent blood (Deuteronomy 19:10; Proverbs 6:17; Isaiah 1:15; Jeremiah 2;17). The bible regards the killing of children as particularly heinous (Leviticus 18:21; 20:1-5; Deuteronomy 12:31). The prophets of Israel were outraged at the sacrifice of children by some of the Jews. They warned it would result in the devastating judgment of God on their society (Jeremiah 7:30-34; Ezekiel 16:20-21, 36-38; 20:31: Compare 2 Kings 21:2-6 and Jeremiah 15:3-4)
Children are a blessing and a gift from the Lord (Psalm 127:3-5). We must learn to see them as God sees them. God’s instruction to us is to act:
Defend the cause of the weak and fatherless; maintain the rights of the poor and oppressed.
Rescue the weak and needy; deliver them from the hand of the wicked.
Psalm 82:3-4