What IS good, and how do we determine it?

[The Grand Nudger]

Their beliefs are simple: there is an uber-powerful god thing that created this whole Universe and put us here on Earth as some sort of personality test so he could pick the best to be his homies in what we call the eternal afterlife, in whatever form of Universe that god thing resides.
In the meantime, since he saw that humans were misbehaving with each other, he impregnated a human girl and the kid that came forth became Jesus... who walked the Earth... the whole of Judaea... teaching his very own and somewhat newish interpretation of the old writings concerning his dad.
Through some miracle, decades after the Jesus bloke goes away and becomes one third of the original god, someone put down those teaching into writing and they're mostly trustworthy.

None of which is relevant to the discussion at hand, none of which supports the argument to natural law offered, all of which supports the divine will, which is the very -basis- of their condemnation of contraception, regardless of how uncomfortable that makes any catholic here, arguing some softer point.  God doesn't like it, that's why it's immoral, end of.

When was the last time you saw a god killing someone?

When was the last time -anyone- saw that?  Doesn't stop them from using it as the premise to their moral truths, the certainty of which depending upon the assertion that it -did happen-.