In Pergamum there were a couple of ideas floating around that still negatively impact our value as witnesses. The first was this: that as God's chosen, covenant people they could be permitted a few lapses in judgement...It was okay. The second was similar: Compromise a little here so that you can be freed up to do God's work...it is a necessary evil. Witnesses, though are believable based upon their perceived integrity. If we compromise there our usefulness as witnesses is also compromised.