and all the wickedness of the men of Shechem did God requite on their heads: and on them came the curse of Jotham the son of Jerubbaal.
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.