This Bible contradiction is from the Skeptic's Annotated Bible.

Verses

Laban was the son of Bethuel.

Genesis 28:5 View context

And Isaac sent away Jacob: and he went to Padan-aram unto Laban, son of Bethuel the Syrian, the brother of Rebekah, Jacob's and Esau's mother.

Laban was the son of Nahor.

Genesis 29:5 View context

And he said unto them, Know ye Laban the son of Nahor? And they said, We know [him].