John Gill Commentary Judges 9:14

"Then said all the trees unto the bramble, Come thou, and reign over us." — Judges 9:14 (ASV)

Then said all the trees unto the bramble
Perceiving they could not prevail upon any of the useful and fruitful trees to take the government of them, they unite in a request to a bramble, scarce to be called a tree, and however a very barren and fruitless one, yea, hurtful and distressing:

come thou, and reign over us ;
this respects Abimelech, and describes him as a mean person, the son of a concubine, as having no goodness in him, not any good qualifications to recommend him to government, but all the reverse, cruel, tyrannical, and oppressive; and this exposes the folly of the Shechemites, and their eagerness to have a king at any rate, though ever so mean and despicable, useless and pernicious.