Is the religion in Shingeki no Kyojin supposed to resemble a real-life religion? In the religion in SnK, they worship the walls as their protectors and a number of times say that the walls were put there by God. The walls are also at least once referred to as Goddesses, though that is from subtitles and may not be entirely correct. Is this supposed to be based off of or mirror any real-life religion? Have the creators made any comments about this?
Although I can't find a source stating this, I presume this might be based on the Jewish religion. In the Jewish religion there is the Kotel. This is a old wall located in Jerusalem which is used for prayer.  


  The Western Wall, Wailing Wall or Kotel is located in the Old City of Jerusalem at the foot of the western side of the Temple Mount. It is a remnant of the ancient wall that surrounded the Jewish Temple's courtyard, and is arguably the most sacred site recognized by the Jewish faith outside of the Temple Mount itself. source