(HT: James Grant)
“You shall not kill the child by obtaining an abortion. Nor, again, shall you destroy him after he is born.” (Barnabas, 70-80 AD, 1.148)
“You shall not murder a child by abortion nor kill one who has been born.” (The Didache, 80-140 AD, 1.377)
“We say that those women who use drugs to bring on abortion commit murder. And we also say that we will have to give an account to God for theabortion.” (Athenagoras, 175 AD, 2.147)
“In our case, murder is once for all forbidden. Therefore, we may not destroy even the fetus in the womb, while as yet the human being derives blood from other parts of the body for its sustenance. To hinder a birth is merely a speedier way to kill a human. It does not matter whether you take away a life that has been born or destroy one that is not yet born.” (Tertullian, 197 AD, 3.26)
“Indeed, the Law of Moses punishes with appropriate penalties the person who causes abortion. For there already exists the beginning stages of a human being. And even at this stage, [the fetus] is already acknowledged with having the condition of life and death, since he is already susceptible to both.” (Tertullian, 210 AD, 3.218)
“Are you to dissolve the conception by aid of drugs? I believe it is no more lawful to hurt a child in process of birth, than to hurt one who is already born.” (Tertullian, 212 AD, 4.57)
“There are some women who, by drinking medical preparations, extinguish the source of the future man in their very bowels. So they commit murder before they bring forth.” (Mark Minucius Felix, 200AD, 4.192)
“The womb of his wife was hit by a blow of his heel. And, in the miscarriage that soon followed, the offspring was brought forth, the fruit of a father’s murder.” (Cyprian, 250AD, 5.326)
“The soul is not introduced into the body after birth, as some philosophers think. Rather, it is introduced immediately after conception, when the divine necessity has formed the offspring in the womb.” (Lactantius, 304-313AD, 7.297)
“You shall not slay your child by causing abortion, nor kill the baby that is born.” (Apostolic Constitutions, 390 AD, 7.466)
Here are some others:
"Women who were reputed to be believers began to take drugs to render themselves sterile, and to bind themselves tightly so as to expel what was being conceived, since they would not, on account of relatives and excess wealth, want to have a child by a slave or by any insignificant person. See, then, into what great impiety that lawless one has proceeded, by teaching adultery and murder at the same time!" (Refutation of All Heresies [A.D. 228]).
Council of Ancyra:
"Concerning women who commit fornication, and destroy that which they have conceived, or who are employed in making drugs for abortion, a former decree excluded them until the hour of death, and to this some have assented. Nevertheless, being desirous to use somewhat greater lenity, we have ordained that they fulfill ten years [of penance], according to the prescribed degrees" (canon 21 [A.D. 314]).
Basil the Great:
"He that kills another with a sword, or hurls an axe at his own wife and kills her, is guilty of willful murder; not he who throws a stone at a dog, and unintentionally kills a man, or who corrects one with a rod, or scourge, in order to reform him, or who kills a man in his own defense, when he only designed to hurt him. But the man, or woman, is a murderer that gives a philtrum, if the man that takes it dies upon it; so are they who take medicines to procure abortion; and so are they who kill on the highway, and rapparees" (First Canonical Letter, canon 8 [AD 374]).
"The woman who purposely destroys her unborn child is guilty of murder. With us there is no nice enquiry as to its being formed or unformed. In this case it is not only the being about to be born who is vindicated, but the woman in her attack upon herself; because in most cases women who make such attempts die. The destruction of the embryo is an additional crime, a second murder, at all events if we regard it as done with intent. The punishment, however, of these women should not be for life, but for the term of ten years. And let their treatment depend not on mere lapse of time, but on the character of their repentance." (Letters, 188.2)
"Wherefore I beseech you, flee fornication. . . . Why sow where the ground makes it its care to destroy the fruit?—where there are many efforts at abortion?—where there is murder before the birth? For even the harlot you do not let continue a mere harlot, but make her a murderess also. You see how drunkenness leads to prostitution, prostitution to adultery, adultery to murder; or rather to a something even worse than murder. For I have no name to give it, since it does not take off the thing born, but prevents its being born. Why then do thou abuse the gift of God, and fight with his laws, and follow after what is a curse as if a blessing, and make the chamber of procreation a chamber for murder, and arm the woman that was given for childbearing unto slaughter? For with a view to drawing more money by being agreeable and an object of longing to her lovers, even this she is not backward to do, so heaping upon thy head a great pile of fire. For even if the daring deed be hers, yet the causing of it is thine" (Homilies on Romans 24 [A.D. 391]).
"I cannot bring myself to speak of the many virgins who daily fall and are lost to the bosom of the Church, their mother. . . . Some go so far as to take potions, that they may insure barrenness, and thus murder human beings almost before their conception. Some, when they find themselves with child through their sin, use drugs to procure abortion, and when, as often happens, they die with their offspring, they enter the lower world laden with the guilt not only of adultery against Christ but also of suicide and child murder" (Letters 22:13 [A.D. 396]).
"Sometimes, indeed, this lustful cruelty, or if you please, cruel lust, resorts to such extravagant methods as to use poisonous drugs to secure barrenness; or else, if unsuccessful in this, to destroy the conceived seed by some means previous to birth, preferring that its offspring should rather perish than receive vitality; or if it was advancing to life within the womb, should be slain before it was born." -De Nube et Concupiscentia 1.17 (15)
"Therefore brothers, you see how perverse they are and hastening wickedness, who are immature, they seek abortion of the conception before the birth; they are those who tell us, "I do not see that which you say must be believed." - Sermon 126, line 12