In the April 2006 newsletter of "Present Testimony Ministry", Frank Viola discusses how he became acquainted with the techniques of mystics in "contemplative" prayer.

See the text of his newsletter.

I sent an email to Frank Viola raising my concerns and suggesting a discussion between him and the Lighthouse Trails people.

Frank Viola is a long-time leader among some segments of the House Church movement.

While not supporting the "house church movement" I am an advocate of house churches. 

I am greatly concerned about the infiltration of ancient Catholic mysticism into the professing Evangelical churches, whether they be institutional churches or house churches. 

Storytelling or Myth-Making? Frank Viola and Ivan Illich

Frank Viola, George Barna, & the Emerging Church