The word ‘Li’ connotes unchanging. this is understood on two levels:
1) Spiritually the Mikdash on high is forever.
2) The Shuls and Yeshivos in Galus make the Beis HaMikdash eternal.
This must be in a specific place just as the body has many different limbs and the highest (or center) is only the brain.
[Order brings real Bli gvul].
In Avoda there is Makif which is Mitzvos; two levels: reasonable and unreasonable.
and Pnimi which is Torah: two levels: Nigla and Nistar. MP3