A certain woman cast an upper millstone on Abimelech's head, and broke his skull.
"Abimelech’s request to be finished off by his armor-bearer is similar to Saul’s later request, so as to avoid dishonor (see 1 Samuel 31:4). Thus, the careers of Israel’s first self-made king, Abimelech, and first divinely designated king, Saul, end in disgrace. Abimelech is an idolater from the beginning, and Saul is rejected by God for disobeying God’s explicit command (1 Samuel 15)." [Note: McCann, p. 75.] 