On another Reformed board, the discussion of Tim Keller came up. Which is something that I do not enjoy discussing. Anyway it became clear that Tim Keller is still despite his believing in Contemplative Spirituality and Theistic Evolution is a favourite among many supposedly Reformed Christians.
When I tried to press the issue, I was told that though these issues are wrong they should not be the litmus test for Christian fellowship. They told me in no uncertain terms that if I make these things essential, I have limited myself to fellowship with very few people.
Obviously I disagree; but is there a way to show how this issue is of upmost importance?

Tom