Charles Ellicott Commentary 1 Chronicles 5:25-26

"And they trespassed against the God of their fathers, and played the harlot after the gods of the peoples of the land, whom God destroyed before them. And the God of Israel stirred up the spirit of Pul king of Assyria, and the spirit of Tilgath-pilneser king of Assyria, and he carried them away, even the Reubenites, and the Gadites, and the half-tribe of Manasseh, and brought them unto Halah, and Habor, and Hara, and to the river of Gozan, unto this day." — 1 Chronicles 5:25-26 (ASV)

The captivity of the three eastern tribes. A fuller account may be read in 2 Kings 17:6–18.