They went out into the field, and gathered their vineyards, and trod [the grapes], and held festival, and went into the house of their god, and did eat and drink, and cursed Abimelech.
In other words, he's an outsider. We ought to be serving Hamor and his family, let them be the kings. And he said to God the people were under my rule, because I can really do a good job here, you know. Who's Abimelech? And so he said if you would just commit yourself to me I would remove Abimelech.