God gave the devil commission to enter into or work upon their minds and hearts; knowing that he of himself, and by his own inclination, would fill them with mistakes, and jealousies, and dissensions, and heart-burnings, which would end in civil wars and mutual ruin.
Related Commentaries of Judges 9:23
Judges 9:23
23 Then God sent an evil spirit between Abimelech and the men of Shechem; and the men of Shechem dealt treacherously with Abimelech: