'Themselves' in the Bible

The Ammonites went out in battle formation at the entrance to the city gate, while the Arameans from Zobah and Rehob, along with the army from Tob and Maacah, were out by themselves in the open fields.

A week later, the child died, and David's staff was afraid to tell him that the child had died. They were telling themselves, "Look, when the child was still alive, we talked to him but he wouldn't listen to what we said. Now what kind of trouble will he bring on himself if we tell him that the child has died?"