Balak
במדבר כב ,ב : :יִרֹמֱאָל ל אָרְ שִי הָ שָע־רֶ שֲא־לָ כ ת א רֹו פִצ־ןֶ ב קָלָ ב אְרַ
Baal HaTurim writes that Balak saw that the sun was stayed by Moshe (Taanis 20a), and therefore Moav was afraid of the bnei Yisroel. The Gematria of וירא (217) equals נקדה החמה (the sun stood in place).
The Holy Admor of Satmar explains why this brought fear into Moav more than all the powerful miracles that Hashem wrought for the bnei Yisrael when taking them out of Egypt and shortly afterwards. The Gemara (Berochos 7a) says that HaShem angers daily, "V'Keil zo'eim b'chol yom," (Tehilim 7:12). The Gemara says that this anger lasts for a fleeting moment, called a "rega," at the time the sun begins to emit its rays. No one knows when this takes place except Bilaam, as the verse later in our Parsha says, "vayodeia daas Elyon" (24:16). Balak's only hope was for Bilaam to ch"v curse the bnei Yisrael at this auspicious moment. However, once Moshe was capable of impeding the movement of the sun, and thus upsetting the timing of the sun's emitting its rays, Bilaam's skill will prove useless, and now Balak was afraid.
