Thanks for the enlightening post, as usual you manage to provide with new meanings and depths even to born Hebrew speakers!

If you want an insider knowledge about the number 7- Rabbi Judah Loew ben Bezalel theorized that this number expresses the wholeness that is still under the nature aspect of the world - like there are 7 days in the week and then you have the holy Shabbath and obviously like good created the world in six days and rested in the seventh and like the temple had 7 gated and on and on.
When you reach 888 - now this is a wholeness above nature, this is where you get to the realm of the super natural, where the mind of men can barley grasp anything at all.

Here is the Wikipedia page about that smart rabbi:
https://en.wikipedia.org/wiki/Judah_Loew_ben_Bezalel

תודה רבה! פוסט מעניין ומקורי!