en_tn_condensed/1ch/20/08.md

These were descendants of the Rephaim of Gath

Here "these" refer to Sippai in 1 Chronicles 20:4, Lahmi in 1 Chronicles 20:5, and the giant in verse 6.

they were killed by the hand of David and by the hand of his soldiers

David and his soldiers are referred to by the part of their bodies used to hold a sword. This can be stated in active form. Alternate translation: "David and his soldiers killed the descendants of the Rephaim" (See: rc://en/ta/man/translate/figs-synecdoche and rc://en/ta/man/translate/figs-activepassive)