In the pinch of the campaign up there, when everybody seemed panic-stricken, and nobody could tell what was going to happen, oppressed by the gravity of our affairs, I went to my room one day, and I locked the door, and got down on my knees before Almighty God, and prayed to Him mightily for victory at Gettysburg. I told Him that this was His war, and our cause His cause, but we couldn’t stand another Fredericksburg or Chancellorsville. And I then and there made a solemn vow to Almighty God, that if He would stand by our boys at Gettysburg, I would stand by Him. And He did stand by your boys, and I will stand by Him. And after that (I don’t know how it was, and I can’t explain it), soon a sweet comfort crept into my soul that God Almighty had taken the whole business into his own hands and that things would go all right at Gettysburg.
Abraham Lincoln, in 1863, when asked about the Battle at Gettysburg