As an auxiliary, will is used to denote futurity dependent
   on the verb. Thus, in first person, "I will" denotes willingness,
   consent, promise; and when "will" is emphasized, it denotes
   determination or fixed purpose; as, I will go if you wish; I will go at
   all hazards. In the second and third persons, the idea of distinct
   volition, wish, or purpose is evanescent, and simple certainty is
   appropriately expressed; as, "You will go," or "He will go," describes
   a future event as a fact only. To emphasize will denotes (according to
   the tone or context) certain futurity or fixed determination.