9 the earth trembled, the sky rained because of Hashem, yon Sinai, because of Hashem, the God of Yisrael.
E-retz ra-a-SHAH af sha-MA-yim na-t’-FU mi-p’-NAY e-lo-HEEM ZEH see-NAI mi-p’-NAY e-lo-HEEM e-lo-HAY yis-ra-AYL
ט אֶרֶץ רָעָשָׁה אַף־שָׁמַיִם נָטְפוּ מִפְּנֵי אֱלֹהִים זֶה סִינַי מִפְּנֵי אֱלֹהִים אֱלֹהֵי יִשְׂרָאֵל׃
68:9 The earth trembled, the sky rained because of Hashem
The psalm opens with a paraphrase of Sefer Bamidbar (10:35), which explains that as the Aron traveled in the desert, Moshe called out, “Advance, Hashem! May Your enemies be scattered, And may Your foes flee before You!” The psalmist acknowledges that Israel goes into battle with God at the helm, smiting the enemy and miraculously scattering the cowardly foe. This is illustrated in a remarkable biblical story concerning the prophetess and judge Devora, and the battle fought by Israel against the Canaanites at Mount Tavor (Judges 4,5). Devora signals to the general Barak that Hashem is fighting with Israel and victory is at hand. The Canaanite army is defeated and Sisera the Canaanite general is ultimately killed by Yael, wife of Chever the Kenite in her tent. After the Israelite victory, Devora praises God with words that are strikingly similar to this verse: “Hashem, when You came forth from Seir, advanced from the country of Edom, the earth trembled; the heavens dripped, Yea, the clouds dripped water, the mountains quaked before Hashem, Him of Sinai, before Hashem, God of Yisrael” (Judges 5:4-3). The earth shakes at the realization that in Israel, God Himself fights together with His people.