In John Updike's "In The Beauty Of The Lilies," the quote suggests that when a group of people bonds closely over shared beliefs, it can create a situation that resembles a prison filled with criminals. This analogy implies that their unity stems not from their strengths, but rather from insecurities or questionable justifications for their beliefs. The closeness they share may be built upon a need to support one another in their flawed understandings or actions, rather than a foundation of wisdom or truth.

The concept raises a critical view of collective belief systems, pointing out that such intimacy might mask deeper issues. When individuals group together based on shame or guilt about their convictions, it can lead to an insular environment where real scrutiny is absent. This solidarity can feel comforting but may inhibit personal growth or the pursuit of genuine understanding, leading to a cycle of self-deception and a lack of accountability among members of the group.