This Rabbinical opinion was developed by Michael Gillette and it represents a trans-denominational perspective. Readers who identify with a particular Jewish movement or congregation should consider their local Rabbi as the appropriate authority.
Chaverim,
Subsequent to our Torah study discussion on Samson,
specifically with regard to the beginning of Judges chapter 13,
I reviewed my sources on Jewish bioethics and confirmed the
information that I shared. Here are some of the key points and
I would be happy to share my sources with any of you who want to
dig deeper.
1) Some sources indicate that prior to forty days of gestation,
the fetus is "nothing but fluid" and has no legal standing at
all. This could have interesting impact on the
stem cell debate.
2) After forty days all sources are unanimous that the fetus has
some moral standing, but that it continues to be considered a
part of the mother until birth. If it is destroyed in a
criminal attack on the mother for instance, she is due damages
but the assailant is not considered to have committed a capital
crime. Also, if a woman who is pregnant commits a capital
crime, she may be put to death even if she is pregnant. One
interesting talmudic source for this is the law that if a person
buys livestock and it turns out to be pregnant, the fetus also
belongs to the purchaser since fetuses are parts of their
mothers.
3) All sources agree that if the mother's life is at risk, an
abortion is not only permissible but possibly obligatory. The
Talmud explicitly states that the fetus may be cut into pieces
if this is necessary to save the life of the mother. The
description in Tractate Oholot is as gruesome as the recent
Supreme Court document. The primary basis for allowing
abortions for maternal indications is that the fetus, by posing
a risk to the mother, takes on the status of a 'rodef' (pursurer)
and the mother's right to self defense then becomes operative.
4) All sources agree that even potential risks to the mother's
life justify abortion, although there is some
disagreement regarding risks that are short of
life-threatening. Most sources agree that serious harm,
including psychological harm, justifies abortion, and that this
is even clearer early in pregnancy (prior to forty days). A
test case of this took place in Israel where the Chief Rabbi
sanctioned an abortion to prevent deafness in the mother.
5) A fetus is considered a "nefesh" at the time of birth which
is defined as when the head is delivered or, in the case of a
breach presentation, when the "greater portion" is delivered.
Notice the similarity to the recent US Supreme Court decision.
It is also important to note that Jewish sources don't really
engage in "ensoulment" talk as do some Christian sources. The
term "nefesh" connotes the moral category of "personhood" as
opposed to the biological category of "human", but it doesn't
seem to indicate a moment at which a soul enters a person. The
best example of 'ensoulment' in Judaism is the description of
the creation of Adam. In Genesis, Adam becomes alive when G-d
breathes into him "the breath of life". The implication is that
if there is a single moment at which life begins, it is when the
first breath is taken. This corresponds to the halachic
definition of death, which is when spontaneous respiration
ceases. It is important to stress, however, that the fetus has
a nebulous status in Jewish law. It isn't worth nothing, but it
isn't a full-fledged person either.
6) Maimonides states that if a baby is killed after a full term
pregnancy, it is murder. However, if the baby is premature, it
isn't murder to kill it until it lives outside of the mother for
thirty days. The baby is not considered viable until a month
has past (which corresponds to the time frame within which a
redemption in the form of the pidyun ha-ben takes place).
7) Most sources indicate that at least after forty days of
gestation, abortion for fetal indications is not permissible.
One exception to this is likely to be a scenario where a fetus
is known to have a condition such that it will not survive for
thirty days post-partem.
8) All sources concur that while abortion ought not to be taken
lightly, it is not equivalent to murder and that it can be
justified. Fetuses are considered "people in progress" and they
do have some claim to protection due to their potentiality.
Nevertheless, abortions are justified in many circumstances,
including those that will cause great mental anguish to the
mother.
Relevant Sources:
Biblical Passages:
Exodus 21:22-23
Talmudic Passages:
Sanhedrin 72b
Yevamot 69b
Niddah 30b
Shabbat 135b
The debate about the sale of cattle is spread among several tractates including: Baba Kama 93b et. ceq. and Baba Bathra 78b
Mishnah:
Oholot 7:6
Arachin 1:4
Terumot 8:12
Additional Passages:
Mishneh Torah, Hilchot Issurey Biyah 10:3
Shulchan Aruch, Choshen Mishpat 425:2



