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Opinions shift, a broken sift, an empty hand
"Opinions shift," - This seems to point towards how some churches change their opinions (or at least the presentation thereof) in order to better suit a situation.
"a broken sift," - A sift, being used as an object or noun here, seems to say that the Christian church or Christians in general have failed in searching out what is good and worthwhile ('a sift").
"an empty hand," - If a search for what is good or worthwhile is "broken", then all that you will have to show for it is "an empty hand."