This article follows Norman Geisler’s classification of moral theories into antinomianism (eg existential ethics), generalism (one general principle but no universal norm eg utilitarianism), situationism (one absolute – agape love, everything else relative), non-conflicting absolutism (one version of Kant which says there are some universal non-conflicting general principles such as the categorical imperative), ideal absolutism (such as Divine Command – break the law and you sin even if the command seems “immoral” like God’s command to Abraham to kill Isaac), hierarchicalism (we can rank norms according to importance and so make a judgement when two conflict eg W.D.Ross’s intuitionism, or proportionalism of Hoose).  Personally, I like the idea of ranking norms and adding a good dose of Aristotelean virtue ethics. it seems to me we must have some method of solving ethical dilemmas when two principles or rules conflict. PB

http://www.wrs.edu/Materials_for_Web_Site/Courses/Theology_5/Chapter_7–Applications_of_Ethics.pdf