(RNS) — On Easter Sunday, the worship band at Bethel Community Church in Redding, Calif, opened the service with 'This Is Amazing Grace,' a 2012 hit that has remained one of the most popular worship songs of the past decade.
Chances are thousands of other churches around the country also sang that song — or one very similar to it.
A new study found that Bethel and a handful of other megachurches hav…