Referring to the claim of Heresy in regards to belief in Heresy, I was reading the following article on A Puritan's Mind found here and I noticed the Mr. McMahon declares that adherents to the federal vision embrace a 'damnable' heresy. He then goes on the claim that their beliefs are Lutheran and High Episcopalian. So, what I am asking is, does he believe that all who do not adhere to a reformed confession are lost?