Genesis 25:1

And Abraham addeth and taketh a wife, and her name is Keturah;

Genesis 23:1-2

And the life of Sarah is a hundred and twenty and seven years -- years of the life of Sarah;

Genesis 28:1

And Isaac calleth unto Jacob, and blesseth him, and commandeth him, and saith to him, 'Thou dost not take a wife of the daughters of Caanan;

1 Chronicles 1:32-33

And sons of Keturah, Abraham's concubine: she bare Zimran, and Jokshan, and Medan, and Midian, and Ishbak, and Shuah. And sons of Jokshan: Sheba and Dedan.

Treasury of Scripture Knowledge

Summary

Then again Abraham took a wife, and her name was Keturah.

Bible References

General references

Genesis 23:1
And the life of Sarah is a hundred and twenty and seven years -- years of the life of Sarah;
Genesis 28:1
And Isaac calleth unto Jacob, and blesseth him, and commandeth him, and saith to him, 'Thou dost not take a wife of the daughters of Caanan;
1 Chronicles 1:32
And sons of Keturah, Abraham's concubine: she bare Zimran, and Jokshan, and Medan, and Midian, and Ishbak, and Shuah. And sons of Jokshan: Sheba and Dedan.