those lights which are placed either upon or immediately behind the altars of some churches to symbolize generally the light of the Gospel and the twofold nature of our Blessed Lord, who in the Nicene Creed is called "Light of Light," and is the true Light of the world. At the offering of the Christian encharist two lights are commonly used; but the law of the Church of England is that they must not be placed upon the altar. They may stand behind it or at its sides. (See CANDLESTICK).