Word Story
At its core the word names an act of setting something apart as sacred or calling down good upon a person — a hand resting on a child's head, water sprinkled in a church. The everyday sense is softer and more social: gratitude for a kindness, or the reflex phrase offered after a sneeze, which for many people is the only time they say it aloud. It also carries a passive, almost wistful use, as when someone describes a life as fortunate or a season as one to be grateful for. Weddings and christenings give it its most visible public setting, where an elder speaks a formal good wish over a couple or a child. In ordinary conversation it can be entirely secular, a warm way of saying thank you or wishing someone safety as they leave, though the older, weightier sense lingers just underneath.