Joshua 15:21

And the cities of the tribe of the children of Judah in all quarters, toward the coasts of Edom southward, were: Kabzeel, Eder, and Jagur;

Genesis 35:21

And Israel went thence and pitched up his tent beyond the tower of Eder.

Nehemiah 11:25

and their villages, throughout all their regions. And the children of Judah that were without in the towns of their land, dwelt some at Kiriatharba, and in the villages thereof, and at Dibon, and in the villages thereof;

Treasury of Scripture Knowledge

Summary

And the uttermost cities of the tribe of the children of Judah toward the coast of Edom southward were Kabzeel, and Eder, and Jagur,

Bible References

Eder

Genesis 35:21
And Israel went thence and pitched up his tent beyond the tower of Eder.