Complex sentence: Abner begged Asahel to stop pursuing him, but when Asahel refused to desist, Abner drove a spear through Asahel's stomach, and Asahel died on the spot.
Split into simpler sentences: Abner begged Asahel to stop pursuing him, but when Asahel refused to desist. Abner stabbed a spear through Asahel's stomach, where Asahel died on the spot.