http://dafyomi.shemayisrael.co.il/parsha/vayera3.htm
Avraham Avinu called the Makom HaMikdash "Har".
Yitchok Avinu called it "Sadeh" - שדה = 309
Yaakov Avinu called it "Bayis"
Avraham Avinu came and prayed on the
place where the Temple was to be,
opposite the heavenly Temple, and with
his prayers he added an additional
wall to the heavenly Temple -- a
second Machaneh of angels. Machaneh
(103) plus Machaneh (another 103)
equals 206. That is why Avraham called
it a "Har" [= mountain], the Gematria
of which is 205 (He = 5, Resh = 200.
One of the rules of Gematria is that
one may, at times, add 1 to the
combined numerical value of a word's
letters. This extra 1 corresponds to
the word as a whole. Adding an extra 1
in such a manner is referred to as "Im
Hakollel" [= with the total]. In such
a manner, the word "Har" equals
exactly 206, or 2x103.)
Yitzchak prayed there and added
another Machaneh of angels to the
Heavenly Beit Hamikdash, giving it a
third "wall." Now that there were
three Machanot, he referred to it as a
"Sadeh" [= field] which has the
Gematria of 309 (Sin = 300, Dalet = 4,
He = 5), or three times Machaneh
(103).
When Yakov prayed there he added a
fourth wall, making it a "Bayit" [=
house], which has the Gematria of four
times Machaneh (103), or 412 (Beit =
2, Yud = 10, Taf = 400).
The Belzer Rebbe adds that the
heavenly Beit Hamikdash did not yet
have a ceiling -- just as the
tabernacle in the desert had four
walls but no ceiling, only a covering
of cloth. Later on, before Moshe
Rabbeinu was taken away from the Bnei
Yisrael, he was shown all of Eretz
Yisrael [= the Land of Israel],
including the place of the Beit
Hamikdash (Rashi, Devarim 3:25). At
that time Moshe Rabbeinu also prayed
for the completion of the heavenly
Beit Hamikdash. He prayed using the
word, "Va'etchanan [= and I pleaded]"
(Devarim 3:23). He used this word
because his prayer was to add a
ceiling -- a fifth Machaneh of angels
-- to the heavenly Beit Hamikdash. Five times Machaneh is 515, exactly
the Gematria of "Va'etchanan" (Vav =
6, Alef = 1, Taf = 400, Chet = 8, Nun
= 50, Nun = 50)!
