From the Introduction:
"In the Triduum, the Church annually enters into such contemplation in its vivid ancient rituals, eager to follow that contemplation with utter joy as we celebrate the outcome of that sacrifice.
This is a time of focused devotion to the things that form the heart of the Christian faith and hope. The intense remembering of the strife and the battle makes the celebration of the victory that much more glorious. Focused devotion and glorious celebration are the themes of this book."