According to an interview Michael Hirst gave to Entertainment Weekly, it was Travis Fimmel's idea to have The Lord's Prayer be the only dialogue that Ragnar says in the entire episode. My admiration for Mr. Fimmel grows with every episode he's in.
And I want to thank them for not ending the season with a cliffhanger, I am so tired of that overused device. If you have a show as amazing as Vikings, you don't need tricks to make sure people tune back in the next season.
Can't wait for David's recap.