Following are a number of back-translations as well as a sample translation for translators of 1 Chronicles 11:15:

• Kupsabiny: “There was a day/time when David was in the cave of Adullam. Then three soldiers out of the thirty very fierce went to where David was. The Philistines had built their camp in the valley of Rephaites.” (Source: Kupsabiny Back Translation)
• Newari: “The three who were famous among the thirty soldiers, went down to David at the rock located near the cave of Adullam. "The Philistines had built camp in the Valley of Rephaim."” (Source: Newari Back Translation)
• Hiligaynon: “One day, his three men went to David there at the cave of Adulam. These three were members of the 30 mighty men of David. The Filistinhon at-that-time were-camping at the Valley of Refaim” (Source: Hiligaynon Back Translation)
• English: “One time three of David’s thirty most mighty warriors came to David when he was camping next to the huge rock outside the cave near Adullam. At that same time, the army of Philistia had camped in the Rephaim Valley.” (Source: Translation for Translators)