To extol or honour in a solemn manner.
To perform or participate in, as a sacrament or solemn rite; to perform with appropriate rites.
To honour by rites, by ceremonies of joy and respect, or by refraining from ordinary business; to observe duly.
To engage in joyful activity in appreciation of an event.
To praise, celebrate or pay homage to (someone), especially in an eloquent formal eulogy.