Krister Stendahl's 3 Rules of Religious Understanding

  1. When you are trying to understand another religion, you should ask the adherents of that religion and not its enemies.

  2. Don't compare your best to their worst.

  3. Leave room for “holy envy.” (By this, Stendahl meant that you should be willing to find elements in the other religious tradition and faith that you admire and wish could, in some way, be reflected in you own religious tradition or or faith.”