2 Chronicles 20:23

KJV : For the children <01121> of Ammon <05983> and Moab <04124> stood up <05975> (8799) against the inhabitants <03427> (8802) of mount <02022> Seir <08165>, utterly to slay <02763> (8687) and destroy <08045> (8687) [them]: and when they had made an end <03615> (8763) of the inhabitants <03427> (8802) of Seir <08165>, every one <0376> helped <05826> (8804) to destroy <04889> another <07453>. {to destroy: Heb. for the destruction}

NASB : For the sons of Ammon and Moab rose up against the inhabitants of Mount Seir destroying \i1 them\i0 completely; and when they had finished with the inhabitants of Seir, they helped to destroy one another.

NASB# : For the sons<1121> of Ammon<5983> and Moab<4124> rose<5975> up against<5921> the inhabitants<3427> of Mount<2022> Seir<8165> destroying<2763> <I>them</I> completely<8045>; and when they had finished<3615> with the inhabitants<3427> of Seir<8165>, they helped<5826> to destroy<4889> one<376> another<7453>.