With respect to ecumenism, it is hard for me to understand how any self-professing Christian can be opposed to this concept--in both theory and practice. It seems to me that those who object to ecumenism are largely, and primarily, strict adherents to radical expressions of faith. I suppose this is why Pope Francis is on record for stating that (ultra) conservative Catholics literally "scare him." Perhaps it is his recognition of the dangers that lie within such rigid strictures of belief.