If ever you have the chance to visit the catacombs in Rome, those tunnels under the ancient city, where many of the early Christians were buried, you can see the symbols of faith on their tombs. Three common symbols appear: the dove, the fish, and the anchor. The dove symbolizes the Holy Spirit. The letters of the Greek word for "fish," ichthus, stand for the words Jesus Christ, God's Son, Savior. The anchor came from the idea that as Christians were going through difficult, insecure times, their hope anchored their souls.