'Themselves' in the Bible

Joab [David’s nephew] the son of Zeruiah and the servants of David also went out and met them by the pool of Gibeon. They sat down, with one group on one side of the pool and the other group on the other side of the pool.

Now the Philistines had come and spread out [for battle] in the Valley of Rephaim.

The Philistines came up once again and spread out in the Valley of Rephaim.

When the Ammonites saw that they had become an object of hatred to David, they sent word and hired the Arameans (Syrians) of Beth-rehob and the Arameans of Zobah, 20,000 foot soldiers, and the king of Maacah with 1,000 men, and the men of Tob with 12,000 men [to fight for them].

The Ammonites came out and lined up for battle at the entrance of the [city] gate, but the Arameans of Zobah and Rehob and the men of Tob and Maacah were [stationed] by themselves in the field.

When David was informed, he gathered all Israel together and crossed the Jordan, and came to Helam. Then the Arameans assembled in battle formation to meet David and fought against him.