Why joy...? Loving God means finding your happiness in God's joy and happiness. It means having complete, total joy, because God is constantly happy. The normal, enduring attitude of a baptized person is thus fullness of joy. Those who belong to God and live from Him indulge in joy. If we live with the Lord and He with us, how could our life not be full of joy and exultation? Peace for the present, hope for the future, and the fruit of joyfulness and happiness, perfect joy.
(Dom Paul Delatte, OSB /1848–1937/, commentary on the Psalms)