09-New-Covenant Theology: New Kid on the Block?

You must have heard something like this:
New-covenant theology? Must be wrong! It was only dreamed
up in the 1970s, wasn’t it? Doesn’t that make it the latest in the
line of Mormons, Seventh Day Adventists, Jehovah’s Witnesses,
and all the other hare-brained schemes? Steer well clear of it!