This Bible contradiction is from the EvilBible.com.
Verses
David took 700 horsement
2 Samuel 8:4 View context
And David took from him a thousand [chariots], and seven hundred horsemen, and twenty thousand footmen: and David houghed all the chariot [horses], but reserved of them [for] an hundred chariots.
David took 7,000 horsemen
1 Chronicles 18:4 View context
And David took from him a thousand chariots, and seven thousand horsemen, and twenty thousand footmen: David also houghed all the chariot [horses], but reserved of them an hundred chariots.