The document discusses the Catholic mass and how well Catholics truly know and understand it. It questions whether Catholics attend mass out of routine or obligation rather than truly knowing what it is and what it means. It suggests that Catholics should understand what the mass is, what it means, why it is celebrated every Sunday and daily, and the spiritual benefits it offers in order to fully receive these benefits. The document appears to be divided into eight parts that will address arguments against celebrating mass and explain the importance of Sunday mass and what is missed or gained by attending.