they are trying to make a differentiation between their one true god, and other false gods
This may be their reasoning, but it's still not proper English. Apparently they're using 'god' as a title, and in English, titles come before the actual name.
How many times have you heard 'Elizabeth Queen'? 'Charles Prince'? 'Bush President'? 'Judy Judge'?
These idiot witnoids are obiously not avid Word users. If anything, it should be 'God Jehovah', but even that sounds unnecessarily redundant.