Why did he say 'I will remove Avimelech'? They already removed him (he was afraid to come here due to the ambush)!
Radak: I will make that Anshei Shechem will never be able to make Shalom with him, [even] if they want to.
Malbim: If I would rule here, I would remove him from kingship.
Why did he say "va'Yomer la'Avimelech"? Avimelech was not there!
Rashi: Ga'al told Zevul 'tell your master Avimelech '
Radak: He said about Avimelech.
Malbim: Whoever hears should tell Avimelech.
What is the meaning of "Rabeh Tzeva'acha va'Tze'ah"?
Rashi: Ga'al told Zevul 'tell your master Avimelech 'increase your army and go out from when you are,[and we will see your greatness!'
Radak: Get as many troops as you can, and come out [while I am here, and let us see what will be between us]!
Malbim: Get many troops and come out to war, for the nation is banding against you.
Malbim (31): Get many troops to come out of your city, for we will besiege it.