For the number connections in the classic Pixies song “Monkey Gone To heaven” Black Francis’ source was his time as a teenage member of the evangelical Assemblies Of God Church.
The lyric in question is ‘If man is five, then the Devil is six. And if the Devil is six then God is seven’. I am not religious by any definition of the word, however I do love that lyric and the song.
http://www.youtube.com/watch?v=06f55sMzpac
With Just A Hint Of Mayhem 