Jotham ran away and fled Which he might easily do, having the advantage of the hill, and because the people were not forward to pursue a man whom they knew to have such just cause to speak, and so little power to do them hurt. To Beer A place remote from Shechem, and out of Abimelech's reach.
Related Commentaries of Judges 9:21
Judges 9:21
21 And Jotham ran away, and fled, and went to Beer, and dwelt there, for fear of Abimelech his brother.