en_tn_condensed/2sa/02/16.md

they fell down together

This is a polite way of saying they died. AT: "they both died" (See: rc://en/ta/man/translate/figs-euphemism)

Helkath Hazzurim

This is a name given to remind people what happened there. (See: rc://en/ta/man/translate/translate-names)

The battle was very severe that day

It may be helpful to explicitly state that this was the large battle that followed the contest of the young men. AT: "Then the others started to fight also. It was a very fierce battle that day" (See: rc://en/ta/man/translate/figs-explicit)