Decisions made solely on the basis of following legal regulations are not ethical decisions. Authorities can be wrong. Throughout history, millions of people have been killed by employees who were simply following their employer's rules and doing their jobs. A decision based on policy that the decision-maker has had a hand in establishing or reviewing, or at least has carefully considered, may be an ethical decision, provided that the policy itself has underlying ethical principles. The Bible tells me so.
Ethics is a part of all major religions.
Over the centuries, people have interpreted the Bible differently. To make an answer based on the Bible into an ethical statement, one would have to explore the reasons why the Bible says this and then explain it in terms meaningful to someone with a different interpretation of the Bible or no experience of the Bible at all. It is unsuitable for health care providers in a multicultural society. Although ethical principles may underlie this emotional response, it is not an ethical statement in itself. The principles-based approach is most common in ethical textbooks and philosophical discussions.