The Birth of SamsonYou pointed out a couple examples of special instances. The fact is that, when the bible was written, the fetus was not considered to be alive by jewish law. There was no anathema to abortion.
13 Again the Israelites did evil in the eyes of the Lord, so the Lord delivered them into the hands of the Philistines for forty years.
2 A certain man of Zorah, named Manoah, from the clan of the Danites, had a wife who was childless, unable to give birth. 3 The angel of the Lord appeared to her and said,“You are barren and childless, but you are going to become pregnant and give birth to a son. 4 Now see to it that you drink no wine or other fermented drink and that you do not eat anything unclean. 5 You will become pregnant and have a son whose head is never to be touched by a razor because the boy is to be a Nazirite, dedicated to God from the womb. He will take the lead in delivering Israel from the hands of the Philistines.”
6 Then the woman went to her husband and told him,“A man of God came to me. He looked like an angel of God, very awesome. I didn’t ask him where he came from, and he didn’t tell me his name. 7 But he said to me,‘You will become pregnant and have a son. Now then, drink no wine or other fermented drink and do not eat anything unclean, because the boy will be a Nazirite of God from the womb until the day of his death.’”