Deuteronomy 20:4

כי ה׳ אלהיכם וגו׳ FOR THE LORD YOUR GOD [IS HE WHO GOETH WITH YOU] — They come to war relying on the conquering strength of human beings (lit., flesh and blood) but you come relying on the strength of the Omnipresent God! The Philistines once came to war relying on the strength of Goliath — what was his end? He fell and they fell with him (Sotah 42a). ההלך עמכם [FOR THE LORD THY GOD] GOETH WITH THEE — this refers to the camp of the Holy Ark (the camp that has the Holy Ark in its midst, i.e. the camp of the Levites) (Sotah 42a).

כִּ֚י יְהֹוָ֣ה אֱלֹֽהֵיכֶ֔ם הַהֹלֵ֖ךְ עִמָּכֶ֑ם לְהִלָּחֵ֥ם לָכֶ֛ם עִם־אֹיְבֵיכֶ֖ם לְהוֹשִׁ֥יעַ אֶתְכֶֽם׃

for the Lord your God is he that goes with you, to fight for you against your enemies, to save you.