I use Blue Letter Bible on my iPad. It has more than one version on it, but you can set it to use KJV ONLY IN SETTINGS. HAS GREAT INTERFACE SCROLL AT TOP FOR NAVIGATING TO SPECIFIC VERSES. ALSO ALLOWS SEARCES WITH KEYWORDS.
A little research reveals that your quote does not come from Beth Moore. Rather, it comes from WF WHITE, who was exposing the fact that Beth Moore was including the RCC as being "of the Body of Christ".