Glorify God with your grammar
I don't normally use this expression, and I don't really know the precise origins of it, but when I thought about it, I thought, well that's what we're always on about isn't it? - doing all things to the glory of God, and doing them as best we can? So then, write well to the glory of God.
(That said, I won't be taking up using this expression, and I was surprised to learn that "for Pete's sake", which I have been known to come out with in traffic, is a euphemism for "for Christ's sake", which means much the same as below, and was considered blasphemous (though there again, there are a good many things we actually do do "for Christ's sake" aren't there?).)
From here.
