Well, this is an information from a certain forum (2ch) in Japan.
According to that information, apparently, that is in the article of "Awake!, July 2010. p.21"
In that article (Awake! July 2010), the Tetragrammaton (YHWH) is drawn in the triangle.
But when looking carefully, a part of those Hebrew is different.
That is, the 2nd "H" of "YHWH" is different.
Rather, that is "waw/vav (W)."
And that looks like 'WWW'.
And interestingly, the Hebrew word "W"(waw) means the figure "6."
Therefore, that is '666'.
(Awake! July 2010. p. 21, Japanese version)
http://quasimoto.exblog.jp/13826207/
http://www.ne.jp/asahi/petros/izumi/arano/arano101216.html
possible