My words fly up, my thoughts remain below:
Words without thoughts never to heaven go.

– William Shakespeare

Hamlet, Act 3, Scene 3. Claudius admits that he has not been praying in earnest, when asking God for forgiveness for his brother’s murder. His words reach to heaven, but his thought are in hell. Ironically Hamlet has just decided not to kill Claudius during prayer because he believes this would despatch his uncle straight to heaven. But he doesn’t realize Claudius’ prayer for forgiveness is false.