In biblical symbolism, glass is often linked to purity, divine clarity, and spiritual revelation. The Book of Revelation (4:6) describes 'a sea of glass, like crystal' before God's throne, signifying the unblemished and transparent nature of God's presence. Glass's transparency can represent the soul's openness before God, while its fragility points to human vulnerability and the need for spiritual humility. Broken glass may symbolize spiritual brokenness, the shattering of illusions, or the process of repentance and renewal, echoing the biblical theme of being made whole through faith.

In Buddhist symbolism, glass embodies impermanence (anicca) and the fragile nature of all phenomena. Its clarity mirrors the lucid mind cultivated through meditation, while its breakability reminds practitioners of the transient and ever-changing nature of existence. Dreaming of glass may prompt reflection on attachment, the need for mindfulness, and the importance of accepting life's inherent fragility with equanimity.

Culturally, glass is associated with fragility, transparency, and transformation. In many traditions, breaking glass is an omen—sometimes of misfortune, sometimes of liberation or change, as in the Jewish wedding custom symbolizing new beginnings. Glass windows can represent openness or barriers, while drinking from glassware is linked to hospitality and communal experience. The motif of walking on broken glass in folklore often symbolizes endurance, resilience, or the overcoming of trials.

In Hindu dream interpretation, glass can symbolize the subtle boundary between the material and spiritual realms. Its transparency allows for glimpses of deeper truths, while its fragility warns against pride and the dangers of ego. Drinking from a glass vessel may represent the absorption of spiritual nourishment, whereas broken glass can serve as a caution against shattered illusions or the consequences of negative karma. Glass thus invites humility and self-awareness on the spiritual path.

In Islamic dream interpretation, glass (zujaj) is a symbol of the heart's inner state—clarity, honesty, and sincerity. According to Ibn Sirin, seeing clear glass in a dream suggests a pure and truthful heart, while broken glass warns of emotional turmoil or loss. Drinking from a glass vessel can indicate lawful enjoyment or blessings, but if the glass breaks, it may foreshadow hardship, loss, or the fragility of worldly pleasures. The transparency of glass also reflects the importance of sincerity in faith and relationships.

From a psychological perspective, glass in dreams often represents the boundaries between the self and the external world—transparent yet protective. Looking through glass may symbolize a desire for insight, understanding, or connection, while drinking from glass can indicate openness to new experiences. Broken glass typically points to feelings of vulnerability, emotional pain, or a disruption in one's sense of security. Seeing one's reflection in glass can highlight issues of self-image, introspection, or the need for self-examination.

Spiritually, glass is a metaphor for clarity, enlightenment, and the unobstructed flow of higher truths. Its transparency allows for the passage of light, symbolizing spiritual insight and awakening. Shattered glass may indicate a breakthrough or the dissolution of illusions that hinder spiritual growth. Drinking from a glass vessel can represent the assimilation of spiritual wisdom, while walking on broken glass may reflect the trials and challenges encountered on the spiritual journey.