Elhanan: etc. Instead of את גלית יערי ארגיס בית הלחמי, of the text, we should certainly read, as in the parallel text, "and Elhanan the son of Jair, slew Lahmi the brother of Goliath." 1Ch 11:26
Jaareoregim: or, Jair, 1Ch 20:5
Goliath: 1Sa 17:4-11
Reciprocal: 1Sa 17:7 - the staff