"וַיִּירָא יַעֲקֹב מְאֹד וַיֵּצֶר לוֹ וַיַּחַץ אֶת־הָעָם אֲשֶׁר־אִתּוֹ וְאֶת־הַצֹּאן וְאֶת־הַבָּקָר וְהַגְּמַלִּים לִשְׁנֵי מַחֲנוֹת׃"
"Jacob was greatly frightened; in his anxiety, he divided the people with him, and the flocks and herds and camels, into two camps..."
First of all, I noticed that in Hebrew it reads: vayetzer lo (ויצר לו), and I wondered, although it’s probably related to Hetzer הצר (to narrow or take in), if this distressed feeling, does his anxiety come from his Yetzer Hara?
Secondly, what exactly was this fear/anxiety of Ya’akov, hence from where did it come? I.e. What kind of fear/anxiety are we talking about? And how was it solved by wrestling the adversary and meeting Esav?