The Easter Candle is a symbol of the light of the risen Christ giving his light to the world. At the Easter evening services, the people in church hold small candles which are lit from the easter candle meaning we now have the light of Christ in our lives to light our way, and that darkness of evil is dispelled. And the promise that one day we too will rise with him.
The red sanctuary candle light that is always burning in church signifies the real living presence of Jesus in the tabernacle, and is hanging in proximity to the tabernacle where the Sacred Host is placed. This real person presence of Jesus is why the faithful genuflect in church, both before taking a place in the pew, and when leaving the pew. If this red sanctuary light is not lit, then the real presence of Jesus in the host is not in the tabernacle. The presence of Jesus is in church so that anyone may come in and sit in his presence and find peace.
The small candles in the candle stands that are placed before an artificial statue in church, Jesus, Mary, St. Michael, St. Theresa, …, are lit by a person who is praying, to symbolize their continual prayer before that saint in heaven.
The candles on the altar are lit for Mass as a sign of christ, the light of the world, who will be soon present on our altar as the vicim lamb, offered in our behalf and that of the whole world.
Just a thought to see the faith being brought alive.