One must choose to believe in God passionately and personally, not as a mere intellectual exercise. An authentic belief acquires its force from within, as a ‘leap of faith’ without the guidance of reason to reassure us that what we are doing is ‘right’ or ‘true’. Such reassurances, would, after all, maintains Kierkegaard, remove the need for faith if God’s existence were simply a matter of commonsense or rational reflection.