Selah?

With all the lines of crap we were fed throught the years in TF. How about the word Selah? The super secret hide from the "system" live underground paranoid lifestyle. From the the small study I did on the word selah it has none of those meanings. Generally it's meaning is musical showing accentuation, pause interuption. Alosfrom ISam 23:28 a cliff in the wilderness of Judah where David escaped from Saul. Sela (a rock). The capital of Edom also called Petra. Any of you scholars have any ideas of how to connect the is word to TF definition?