20 They prevailed against them; the Hagrites and all who were with them were delivered into their hands, for they cried to Hashem in the battle, and He responded to their entreaty because they trusted in Him.
va-yay-a-z’-RU a-lay-HEM va-yi-na-t’-NU v’-ya-DAM ha-hag-ree-EEM v’-KHOL she-i-ma-HEM KEE lay-lo-HEEM za-a-KU ba-mil-kha-MAH v’-na-TOR la-HEM kee VA-t’-khu VO
כ וַיֵּעָזְרוּ עֲלֵיהֶם וַיִּנָּתְנוּ בְיָדָם הַהַגְרִיאִים וְכֹל שֶׁעִמָּהֶם כִּי לֵאלֹהִים זָעֲקוּ בַּמִּלְחָמָה וְנַעְתּוֹר לָהֶם כִּי־בָטְחוּ בוֹ׃
5:20 For they cried to Hashem in the battle
In the previous verses, we are told that the combined forces of the tribes of Reuven, Gad and Menashe numbered an impressive 44,760 troops of exceptional quality. And yet, we are told that the reason they were victorious in battle is because they trusted in Hashem and believed that He would help them and save them. As we have seen numerous times throughout Tanakh, success in the Land of Israel is not tied to physical capability and effort alone, though these are very important, but also to faith and trust in God.