Genuine prayer is not a deed, an exercise, a pious attitude. Rather it is the request of the child to the heart of the Father. That is why prayer is never demonstrative, neither before God nor before ourselves, nor before others. If God did not know what I need, then I would have to think about how I should tell God, what I should tell God, whether I should tell God. But the faith out of which I am praying prevents such reflecting or demonstrating.