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

Verses

Salah's father was Arphaxad

Genesis 10:24 View context

And Arphaxad begat Salah; and Salah begat Eber.

Genesis 11:12 View context

And Arphaxad lived five and thirty years, and begat Salah:

Salah's father was Cainan

Luke 3:35-36 View context

Which was [the son] of Saruch, which was [the son] of Ragau, which was [the son] of Phalec, which was [the son] of Heber, which was [the son] of Sala,

Which was [the son] of Cainan, which was [the son] of Arphaxad, which was [the son] of Sem, which was [the son] of Noe, which was [the son] of Lamech,