This Bible contradiction is from the EvilBible.com.
There were 14 generations from Abraham to David
Matthew 1:17 View context
So all the generations from Abraham to David [are] fourteen generations; and from David until the carrying away into Babylon [are] fourteen generations; and from the carrying away into Babylon unto Christ [are] fourteen generations.
There were but 13 generations from Abraham to David
Matthew 1:2-6 View context
Abraham begat Isaac; and Isaac begat Jacob; and Jacob begat Judas and his brethren;
And Judas begat Phares and Zara of Thamar; and Phares begat Esrom; and Esrom begat Aram;
And Aram begat Aminadab; and Aminadab begat Naasson; and Naasson begat Salmon;
And Salmon begat Booz of Rachab; and Booz begat Obed of Ruth; and Obed begat Jesse;
And Jesse begat David the king; and David the king begat Solomon of her [that had been the wife] of Urias;