אֲדֹנָי֮ שִׁמְעָ֪ה בְק֫וֹלִ֥י תִּהְיֶ֣ינָה אָ֭זְנֶיךָ קַשֻּׁב֑וֹת לְ֝ק֗וֹל תַּחֲנוּנָֽי׃
主啊，求你聽我的聲音；願你側耳垂聽我懇求的聲音。
Rashi
נסעה is an imperative like שִׁמְעָה and שִׁלָחָה which are equivalent to שְׁמַע "hearken!” and שְׁלֵח “send!” Similarly here, נִסְעָה is equivalent to נְסַע “travel on!”, where the נ is a root-letter of the word and not the prefix of the future in which case the word would mean “let us travel on”, similar to the following word ונלכה “and let us go”. The Targum also takes it in this sense, rendering it: “Travel on and let us go". Thus Esau said to Jacob, “Travel thou on from here and let us go etc.