(This is the First Prophet’s personal insight and interpretation, and not a necessary extrapolation of the Tenets themselves; others are free to interpret them differently).
I) You can believe what you like, and so can I. I won’t criticise your faith, no matter how stupid it may seem to me, and I consequently expect you to respect my acceptance of Ecumenical Relativism as my equivalent belief, no matter how bizarre that may sound to you.
II) As all faiths have different definitions, properties and numbers (including zero) of supernatural and/or divine beings, whether there is or is not a/several god(s) is undefinable. I therefore believe that there is no answer to such a question, refuse to answer it and would be offended if pressed on the issue. I may even say that my religion forbids me to ask or answer this question.
III) Most rational people intrinsically know what is right and what is wrong. This is often in conflict with their religious belief, but that is fine, as long as they don’t do anything about it. Human morality is a fundamental property of our nature as a species, it is written into us before any faith can take hold, and it pre-dates all creeds and doctrines. Wherever it came from, and reasonable people can still disagree on that, it is demonstrably present. It is universal, and it should take precedence over any specific religious instruction that might contradict it. It’s not perfect, and there will always be the odd psycho, but we have to cope with them. The general good should prevail.
A more detailed treatment of why morality is considered inherent to human nature, and the arguments supporting that position, can be found in the Five Arguments for Inherent Human Morality.