Rachel's argues regarding the relationship between morality and religion especially focusing upon Christianity. Rachel's points out:
1. With regard to some ethical questions, the scriptures offer no "specific moral guidance", such as the rights of workers, the extinction of species, and the finding of medical research as examples.
2. With regard to other questions, the scriptures, as well as church traditions, do say something, but what they say is ambiguous and they contain elements that are favorable to both sides of an issues and it should be stated that there is no universal agreement among biblical scholarship about what exactly what a given passage says. Interpretation is always an issue.
Rachel's claims that the latter is the case with regard to the issue of abortion. Here is an argument that many conservative Christians give against abortion:
1. A fetus is a human being from the moment of conception.
2. Killing a human being is immoral.
3. Therefore, killing a fetus (i.e. abortion) is immoral.
According to Rachel's, the scriptures give no straightforward support for the first premise which contends, "A fetus is a human being from the moment of conception."
