Religion does not matter in court...
Reynolds v. United States in 1878 defined marriage as one man and one woman.
In this context you are correct. Let's hope and pray that this is all it comes down to and that the Court affirms stare decisis
California's Prop 8 is a matter of a State's right to self-determination affirming through popular vote the "one man one woman" definition of marriage through the State constitutional amendment process.
NY's gay marriage accommodation by vote of State Senate (not popular referendum like in WA and MD) takes on DOMA.
Gay marriage was imposed on CT and MA by courts alone.
Either Prop 8 and DOMA are upheld or our foundational system of government -- the married family unit -- will be destroyed as will the self-governability of the US with it.
Traditional America MUST win this.
FReegards!