I just saw the posting on the Bible and abortion. The OP asked where in the Bible that abortion was forbidden.
Other than the countless scriptures on taking innnocent life, we have this passage from the Epistle of Barnabus (19:5):
Thou shalt not doubt whether a thing shall be or not be. Thou shalt not take the name of the Lord in vain. Thou shalt love thy neighbor more than thine own soul. Thou shalt not murder a child by abortion, nor again shalt thou kill it when it is born. Thou shalt not withhold thy hand from thy son or daughter, but from their youth thou shalt teach them the fear of God.
English Translation by J. B. Lightfoot
Thou shalt not slay the child by procuring abortion; nor, again, shalt thou
destroy it after it is born. Thou shalt not withdraw thy hand from thy son,
or from thy daughter, but from their infancy thou shalt teach them the fear
of the Lord.
Roberts-Donaldson English Translation
When was the Epistle of Barnabus written?
C. E. Crossman writes: "Richardson and Shukster have also argued for a first-century date. Among several arguments they point to the detail of "a little king, who shall subdue three
of the kings under one" and "a little crescent horn, and that it subdued under one three of
the great horns" in Barnabas 4:4-5. They propose a composition "date during or immediately
after the reign of Nerva (96-8 C.E.)...viewed as bringing to an end the glorious Flavian
dynasty of Vespasian, Titus, and Domitian...when a powerful, distinguished, and sucessful
dynasty was brought low, humiliated by an assassin's knife" (33, 40).
It is one of the earliest Christian writings and I have no idea why it was not included in the
Bible. But there are many others, like the Testaments of the Twelve Patriarchs that also was
considered scripture by the early Christians.