All these words and phrases have acquired new meanings far removed from the superstition that spawned them. We'd have to find new names for the days of the week. Then there's all those words with hidden religious meanings: "goodbye", for instance, means (I believe) "God be with you". "Bloody" and "Strewth", so beloved of the Aussie persuasion, stem from "By our Lady" and "God's truth" respectively. Even I'm not nearly as pedantic as that. If it could be possible to rearrange the language in this way I think it'd be more trouble than it's worth to be honest. Not to mention pretty damn pointless. (See, I said "damn".)
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'