and you are risen up against my father's house this day, and have slain his sons, seventy persons, on one stone, and have made Abimelech, the son of his maid-servant, king over the men of Shechem, because he is your brother);
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.