Verses with the word timna in the Old Testament (4 verses):

Genesis 36:12
And Timna was concubine to Eliphaz Esau's son; and she bare to Eliphaz Amalek: these were the sons of Adah Esau's wife.

Genesis 36:22
And the children of Lotan were Hori and Hemam; and Lotan's sister was Timna.

1 Chronicles 1:36
The sons of Eliphaz; Teman, and Omar, Zephi, and Gatam, Kenaz, and Timna, and Amalek.

1 Chronicles 1:39
And the sons of Lotan; Hori, and Homam: and Timna was Lotan's sister.