So as you put it, if blood carries life, then the heart pumping blood at day 30, or even 21 being fully developed, means there is life. It just hasn't been 'born' as yet. Therefore, this 'strictly biblical argument' you define is backed up by medical fact.
I believe a legitimate argument can be made that abortion is not a "murder" in the biblical sense unless it stops a beating heart.
Ah, but as shown above, it does.
Now can anyone point to a biblical verse which provides evidence that life from a biblical standpoint begins before the heart begins to beat?
As previously argued above: Jeremiah 1:5 that says "Before I formed you in the womb I knew you, and before you were born I consecrated you; I appointed you a prophet to the nations."
God knows us before we were even formed. He has consecrated us before our birth. Please tell me how an abortion doesn't fly in the face of God's design?
Oh, and there's also been the argument about still born fetuses. That is God's design, not man's. It's His will we should be honoring, not the will of the parent to make life simpler for oneself, or because the fetus is a burden.
Again, how is it proper to destroy the child for the sins of the father? God does, yes. But we're not God.
So let's knock off the invective diatribes against Eagle Eye on this point.
And what of Eagle Eye's invective diatribes against us? Calling me a liar? No comments on that? If I recall correctly, he was the one who began with the invectives.
Are you as adamant about contraception as you are against abortion? If Jeremiah 1:5 is your sole basis for arguing against abortion in the first 21 days, then would you not argue that contraception is Murder as well?
And what of Eagle Eye's invective diatribes against us?
You could try turning the other cheek.