All the men of Shechem assembled themselves together, and all the house of Millo, and went and made Abimelech king, by the oak of the pillar that was in Shechem.
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.