Philip Ryken and Michael LeFebvre end their Our Triune God: Living in the Love of the Three-in-One with a chapter on “the Joyous Trinity.” They close the book with this:

“Eric Masall insisted that the Trinity is never merely a doctrine but always meant to be a grateful joy. To say that God is triune, he wrote, is to say that ‘there are three divine persons eternally united in one life of complete perfection and beatitude.’ This tri-union ‘is the secret of God’s most infinite life and being, into which, in his infinite love and generosity, he has admitted us, and is therefore to be accepted with amazed and exultant gratitude’” (114).