Cross reference
1 Chronicles 1:33
33 And the sons of Midian: Ephah and Epher and Hanoch and Abida and Eldaah. All these were the sons of Keturah.
Isaiah 60:6
6 You will be full of camel-trains, even the young camels of Midian and Ephah; all from Sheba will come, with gold and spices, giving word of the great acts of the Lord.