According to Musket, prefixing a statement with 'as a Christian...' implies moral authority. I do not see how that conclusion can be drawn. In a conversation about education I might say 'as a retired teacher...' Simply to contextualise what I wish to say and, perhaps, to establish my credentials. If I were to indicate that I was speaking as a Christian it would indicate no more than my attempt to present a Christian view. I do not see how I could claim any moral superiority. If others choose to confer such authority on me that is a matter for them.