All Christians know something the Jews did not know about what it "cost to redeem their souls." Our life as Christians begins by being baptized into a death; our most joyous festivals begin with, and centre upon, the broken body and the shed blood. There is thus a tragic depth in our worship which Judaism lacked. Our joy has to be the sort of joy which can coexist with that; there is for us a spiritual counterpoint where they had simple melody... I find an experience fully God-centered, asking of God no gift more urgently than His presence, the gift of Himself, joyous to the highest degree, and unmistakably real. What I see (so to speak) in the faces of these old poets tells me more about the God whom they and we adore.
C.S. Lewis
Reflections on the Psalms pp158