Why he should ask us to pray, when he knows what we need before we ask him, may perplex us if we do not realise that our Lord and God does not want to know what we want (for he cannot fail to know it), but wants us rather to exercise our desire through our prayers, so that we may be able to receive what he is preparing to give us. His gift is very great indeed, but our capacity is too small and limited to receive it. That is why we are told: Enlarge your desires, do not bear the yoke with unbelievers. (Saint Augustine, +430)