by Reb Gutman Locks @ Mystical Paths
There is only place where the letter shin appears with four arms; on one side of the tefillin head piece. The shin on the other side of the head piece has three arms as usual. Why does that shin have four arms while in all other places in the entire Torah it has three?
The head piece of the tefillin is a reminder of the tablets that the Ten Comments were inscribed on. One of the most amazing things about those tablets is that the commandments could be read from either side. This sounds impossible since the letters would seem to be backwards from the other side. But when we look at the “empty” spaces between the four arms of the shin on the head piece, in that emptiness we see another Hebrew letter. Can you see it? The empty space forms a three armed shin just like the one on the other side of the tefillin. It is as if we can see the three-armed shin from the other side. This helps to remind us of the Tablets of the Ten Commandments.
Well, I always thought that there was no other place anywhere that a four- armed shin appears. That was before I went up on my roof after davening this morning. I looked up at the sky above the Temple Mount, and there I saw…