Douglas Wilson, considering joy as taught by Solomon in Ecclesiastes:
God is the One who gives things, and God is the one who gives the power to enjoy things. These are distinct gifts…just as a can of peaches and a can-opener are distinct gifts. Only the first is given to the unbeliever. The believer is given both, which is simply another way of saying that he is given the capacity for enjoyment.
– from Joy at the End of the Tether: the Inscrutable Wisdom of Ecclesiastes, page 17.