The following may look “not enough conservative”, but my purpose is to strictly follow the Bible:
(Job 3:16) “or as a hidden untimely birth I had not been, as infants who never saw light.”
Bible seems to say (if I understand it correctly) that unborn embryos do not have soul.
I do not say that abortion is good. I just try to make a biblical point on it.
Is killing an unborn embryos well a killing? I do not know, but it seems not to be sending a soul into separation of body, because there is no soul in this case.
The above is just my personal opinion and it may be wrong.