His Word Will Do Whatever He Wills

Thus says the LORD:
Just as from the heavens
   the rain and snow come down
And do not return there
   till they have watered the earth,
   making it fertile and fruitful,
Giving seed to the one who sows
   and bread to the one who eats,
So shall My word be
   that goes forth from My mouth;
It shall not return to Me void,
   but shall do My will,
   achieving the end for which I sent it.
~Isaiah 55:10-11