"The voice is the voice of Jacob" (Genesis 27:22). Your strength is harder [greater] than that of Esau. Esau, if he seizes a man, behold he is in his hand; but if the man flees, he can do nothing to him. But you - even if a man flees to the end of the world, the voice you raise in the synagogue, behold it comes of itself [it reaches and is heard].
The Reach of a Voice Outruns the Grasp of a Hand
Yalkut Shimoni on Torah 115:6
הַקֹּל קוֹל יַעֲקֹב, כֹּחֲךָ קָשֶׁה מִשֶּׁל עֵשָׂו, [עֵשָׂו] אִם תּוֹפֵס אֶת הָאָדָם הֲרֵי הוּא בְּיָדוֹ, וְאִם בָּרַח, אֵינוֹ יָכוֹל [לַעֲשׂוֹת] לוֹ דָּבָר, אֲבָל אַתָּה אֲפִילוּ אָדָם בּוֹרֵחַ לְסוֹף הָעוֹלָם, הַקּוֹל אַתָּה אוֹמֵר בְּבֵית הַכְּנֶסֶת וַהֲרֵי הוּא בָּא מֵעַצְמוֹ.