My brother it depends on the circumstances surrounding the the abortion and at what stage.
medical abortion has saved thousands of lives. If you have ever heard of evacuation by doctors. It is the method used in removing miscarried babies (natural abortion) or babies growing outside the uterus or babies that are to be removed because they pose significant risk to the life of the mother. Now, all these are justifiable means and i would not term them a sin. Now people also use this methods to do what pleases them. In my opinion, I am not be the judge, everyone has a right to his or her body. If it is a sin the person should be the one to bear it. Let God be the judge. I do not abhor abortion neither am i in support of it.