I read this in an interview of US vice-presidential candidate Sarah Palin:
Mrs Palin [was] quizzed on previous comments she made describing the war in Iraq as being a “task from God”.
She said she was quoting the words of Abraham Lincoln: “I would never presume to know God’s will or to speak God’s words.
“But what Abraham Lincoln had said… was let us not pray that God is on our side in a war or any other time, but let us pray that we are on God’s side.”
Hmm… Funnily enough I can think of time when you presumed to know God’s will: