This is a very expressive symbol that takes on different meanings depending on its positioning in relation to the body and arrangement of the fingers. The raised hand symbolizes voice and song, placed on the chest it represents the wisdom of the sage, on the neck it depicts sacrifice, covering the eyes it signifies clairvoyance at the moment of death. Two hands joined typically signify union. A common hand placement on Jewish tombstones is the two open hands, thumbs touching, with index and middle finger spread away from the ring and pinkie fingers. This gesture, raised above the head, is used by priests to bring God's glory through the hands' openings and to the congregation. In Egyptian hieroglyphics, pre-Columbian America and as an amulet in Islamic cultures, the open hand represents a human task and magnetic force. The hand, with its five fingers, takes on the meaning of the number five, i.e., love, health and humanity. Handshakes carry a variety of meanings including, greeting, good-bye, friendship, solidarity, unity and agreement, and the doubling of power achieved through partnership. The right hand is the life-force or hand of power. An eye associated with a hand symbolizes clairvoyant action.