Judges 9:41 - Joseph Benson’s Commentary on the Old and New Testaments

Abimelech dwelt at Arumah He did not prosecute his victory, but retreated to Arumah, to see whether the Shechemites would not, of themselves, return to his government, or in expectation that they would hereby grow secure, and so give him the greater advantage against them. And Zebul thrust out Gaal Finding the spirit of Gaal's party a little cooled, perhaps through their suspecting him of cowardice, or ill conduct, he took the opportunity of expelling him and his brethren from the city; but seems to have shut the gates against Abimelech also. His interest, it seems, was not so considerable with the people that he could prevail with them either to kill Gaal and his brethren, or to yield themselves to Abimelech; and therefore he still complies with them, and waits for a fairer opportunity.