Related Clues:

• Passage prerequisite, perhaps
• Wedding, e.g.
• Bris or confirmation
• Unmoved one
• Ordination, e.g.
• Solemnity
• Observance
• Baby naming, e.g.
• Customary practice
• Time-honored practice
• Philosophical
• Sacred ceremony
• Religious ritual
• Sacrament
• Impassive one