1 Chronicles 4:39

And they went to the entrance of Gedor, even unto the east side of the valley, to seek pasture for their flocks.

And they went to the entrance of Gedor, [probably not Gªdor (H1446), but Gªraar (H1642), Gerar; Septuagint, Gerara]. Simeon having only a part of the land of Judah, they were forced to seek accommodation elsewhere; but their establishment in the new and fertile pastures of Gerar soon proved inadequate, and a new colony of them effected by force a settlement on mount Seir.