COEXIST with the Remnant Church? - The Trojan Horse

Biblical Challenges to “More Connected Than Separated".
On which foundation are the unity we all desire to be based on - on common denominator among different denominations and religions or truth?

Based on the article from Advent Messanger.
http://adventmessenger.org/more-connected-than-separated-adventists-in-germany-join-catholics-orthodox-protestants-buddhists-jews-and-muslims-to-promote-a-common-hope/

'Sanctify them through thy truth: Thy word is truth' John 17:7