וַֽאֲנִי נָתַתִּי לְךָ שְׁכֶם אַחַד עַל־אַחֶיךָ אֲשֶׁר לָקַחְתִּי מִיַּד הָֽאֱמֹרִי בְּחַרְבִּי וּבְקַשְׁתִּֽי
And I have given to you one portion above your brothers, which I took from the hand of the Amorite with my sword and with my bow.
וַאֲנָא יְהָבִית לָךְ חוּלַק חַד יַתִּיר עַל אָחָךְ דִּי נְסִיבִית מִידָא דֶאֱמוֹרָאָה בִּצְלוֹתִי וּבְבָעוּתִי (אונקלוס, בראשית (מח:כב)
“…which I took from the hand of the Amorite with my prayer and with my will.” -Onkelos
Why is the ‘bow” likened to prayer? Just as the more one tightens the bow, the further the arrow flies, likewise the more one applies his mind to his prayer with true devotion, the further and higher can it soar into the heavens.