Prevention of birth is premature murder, and it makes no difference whether it is a life already born that one snatches away or a life that is coming to birth.
TertullianThe Word, then, the Christ, is the cause both of our ancient beginning, for lie was in God, and of our well-being. And now this same Word has appeared as man. He alone is both God and man, and the source of all our good things
Tertullian