The Magen David (as it is written in Hebrew) or David Shield or Star of David is well known as the symbol of Israel and Jewish people. It appears on the flag of the state of Israel. It is believed that invincible King David - King of Israel used this symbol on his shield - and it has protected him in many battles . As well it is believed that Magen David is composed of two triangles which symbolize the unity between heaven and earth - thus symbolizing balance from holistic point of view. Altogether Magen David symbolizes strength , God's protection on Israel ,balance and unity.