Can I give it a shot?
Oh, first off, I think you asked about applying the gospel to abortion.. How about:
Matthew 7:12
New English Translation
12 In everything, treat others as you would want them to treat you,[c] for this fulfills[d] the law and the prophets.
Now onto your other question.
Murder:
noun
Law.
the killing of another human being under conditions specifically covered in law. In the U.S., special statutory definitions include murder committed
with malice aforethought, characterized
by deliberation or premeditation or occurring during the commission of another serious crime, as robbery or arson (first-degree murder, or murder one ), and murder by intent but without deliberation or premeditation (second-degree murder, or murder two ).
OK, so it is the killing of another human being. Lets look at conception.
Two cells from two humans with human DNA.. The ovum and the sperm. Both are human. They carry human. DNA creating a fetus that, at any point in time... if tested, will show that it has human DNA.
So, it's human.. at all stages.
Is the Fetus living?
These two cells, the sperm and the ovum, are alive, they can die and will die if they do not meet.
Is the fetus alive... Well, fetus' die. They are growing. They are of separate DNA from the mother and father. They are their own entity. They are the result of two living cells from their parents and once these two cells connect, they begin to grow under the direction of the human DNA that it contains.
So, it's HUMAN and it's LIVING
Killing another human being is MURDER..
The definition states:
"with malice aforethought, characterized
by deliberation or premeditation"
Are abortions premeditated? Absolutely.
The definition states that it's only murder if committed "under conditions specifically covered in law." In other words.. Murder is:
the crime of unlawfully killing a person especially with malice aforethought
When is it not a crime to kill someone?
This article says the following:
https://www.steinandmarkuslaw.com/when-homicide-is-considered-excusable-or-justified/
1/ Self defense
2/ Defense of others
3/ Protection of personal property
4/ War would also be an excusable act of killing not mentioned in the article.
1/ Are abortions self defense... probably in some cases the medical doctor will conclude that if the pregnancy continues the mother, and probably the fetus will die. So, sometimes.
2/ Are abortions considered the "Defense of others"... I think that that is a no. No third party person has died because a woman had a baby.
3/ Is personal property at any risk? No fetus is threatening your personal property. It's inside the mothers body.
4/ War... Not until it's drafted...
SO.. my conclusion... Abortion is premeditated murder.