Genesis 28:19

19He called the name of that place aBethel,
 Bethel means the house of God
but the name of the city was Luz at the first.

Joshua 18:13

13From there the boundary passes along southward in the direction of Luz, to the shoulder of cLuz (that is, Bethel), then the boundary goes down to dAtaroth-addar, on the mountain that lies south of Lower eBeth-horon.
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