Sterling .925 Silver Stud Earrings with White Opal Magen David Star Jewish Symbol About Magen David Symbol The Star of David was considered to be a powerful amulet in the ancient times and was often used to repel dangers, evil and accidents. Originally, the Hebrew name Magen David -- literally Shield of David -- poetically referred to God. The Shield of David is also used as an amulet containing within it various verses from the Book of Psalms, and names of various angels, blessings for success, health, easy childbirth and so on.This is also alluded to in the third blessing after the Haftorah reading on Shabbat: Blessed are you God, Shield of David. The triangle pointing upwards also symbolizes all that is good in the universe whilst the triangle pointing downwards symbolizes all that is evil. The combination of the two triangles symbolizes the victory of good over evil.