Erin mentioned in the Music Genres thread that Contemporary Christian Music isn't actually very contemporary. True, but it is hardly the only thing we might say that about. New Road in Goffstown is an old road now, and throughout New England there are New Boston, New Hampshire, New Hampton, Newton - none of which are remotely new now, just newer than the originals.
New Thought is a century old. New anything is about a century old, as we went to the synonyms "modern" and then "contemporary," which are now themselves rather dated.
Contemporary Christian Music got its name 25-30 years ago. Names change only slowly, so that's the name of a certain style of light rock that is used more for both listening and worship, requires instrumentation, in contrast to praise songs - which can be sung at camp - that features understandability in lyrics and a lead singer who is highly interpretive with melody and shading. Not much harmonising, except what the audience/congregation supplies itself.
The style persists, though it is no longer the only "contemporary" style.