Sha'ar HaChamishim Shel Binah

שנאמר ומלא ברכת ב' ים ודרום ירשה
Sefer HaBahir, verse 3 excerpt

Traditional interpretation: "Because it is written (Devarim 33:23): The filling is G-d's blessing possessing the Sea and the South."

ומלא "the filling", has a gematria of 77, with a digit product of 49, and a digit quotient of 1. These are the 49 gates and the 50th gate of understanding, respectively.

ומלא permutes to לאום, meaning "to אום", where אום is a Divine Name [1] pertaining to the revelation of messianic consciousness.

Thus, "the filling" pertains to the completion of one's consciousness with the 50th gate of understanding (sha'ar hachamishim shel binah), and the resultant revelation of messianic consciousness through permutation of "the filling" ומלא "into the Divine Name" לאום.

Footnote:

[1] R' Yitzchak Ginsburgh, The Hebrew Letters (p. 211)