Will, you and your violent rhetoric.
I believe the religious foundation behind opposing abortion would be "Thou shall not murder." Obviously, that is why the "when is it a 'person' argument" becomes so important in their debate. So, yes, there is scripture reference to murder and the opposition to murder. Again, I'm not debating abortion. I simply correcting your assertion that there is no foundation.
As to "gay marriage", uh, yeah - it's in there too. That would be the several references to homosexuality being a sin coupled with keeping marriage "holy". As I've said before, I support giving same sex couples the exact same legal status my wife and I have.