Isaiah 55:10-11 (New International Version)

 ¹⁰ As the rain and the snow
       come down from heaven,
       and do not return to it
       without watering the earth
       and making it bud and flourish,
       so that it yields seed for the sower and bread for the eater,

 ¹¹ so is my word that goes out from my mouth:
       It will not return to me empty,
       but will accomplish what I desire
       and achieve the purpose for which I sent it.