Well, as a C of E regular attender at church, I simply wouldn't say it. I've no problem in thinking of God by using 'He' as a catch-all because language is not capable of defining the supreme being (that sounds pretentious, sorry, only way I could think of saying it).
Neither will I use a plural personal pronoun to describe a single being or person - it's ungrammatical and I am finding that I abandon more and more books these days because I find the increased usage of 'they' so very off-putting and confusing. Just reading a book by J.R. Ellis (closed room mysteries) whose previous efforts I have thoroughly enjoyed. In it I came across this collection of words - you can't call it a sentence - 'Well, this killer doesn't hang around, do they?' Complete nonsense.
If the C of E does go down this path, then I shall no longer attend church unless they want me to continue playing the organ - and I shall ask to be paid for that.