Commentaire sur La Genèse 33:12

נסעה is an imperative like שִׁמְעָה and שִׁלָחָה which are equivalent to שְׁמַע "hearken!” and שְׁלֵח “send!” Similarly here, נִסְעָהis 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.

נסעה ונלכה, to Seir, Esau’s home. This was in line with what Yaakov’s messengers had told Esau as being their destination.

ויאמר נסעה, it is possible that Esau’s “suggestion” was in the nature of a command. He was conscious that Yaakov’s progress would be slow due to the animals as well as the children some of whom were of tender age.