Star of David in the context of "Yellow badge"

The Abrahamic religions are a set of monotheistic religions that respect or admire the religious figure Abraham, namely Judaism, Christianity, and Islam, though the term also often encompasses several smaller faiths. The religions of this set share doctrinal, historical, and geographic overlap that contrasts them with Indian religions, Iranian religions, and East Asian religions. The term, introduced in the 20th century, replaced "Judeo-Christian" to include Islam as an Abrahamic religion and acknowledge differences between Judaism and Christianity. However, it has been criticized for oversimplifying cultural and doctrinal nuances.

A religious symbol is an iconic representation intended to represent a specific religion, or a specific concept within a given religion.

Religious symbols have been used in the military in many countries, such as the United States military chaplain symbols. Similarly, the United States Department of Veterans Affairs emblems for headstones and markers recognize 57 symbols (including a number of symbols expressing non-religiosity).

Under the Geneva Conventions, the emblems of the International Red Cross and Red Crescent Movement are to be worn by all medical and humanitarian personnel and also displayed on their vehicles and buildings while they are in an active warzone, and all military forces operating in an active warzone must not attack entities displaying these emblems. The International Red Cross and Red Crescent Movement recognizes four protection emblems, three of which are in use: the Red Cross (recognized since 1864), the Red Crescent (recognized since 1929), the Red Lion and Sun (recognized since 1929; unused since 1980), and the Red Crystal (recognized since 2005).

The Red Cross was the original protection symbol declared at the First Geneva Convention in 1864. The Red Crescent, which was first used by the Ottoman Empire in the 1870s, and the Red Lion and Sun, which had been used only in Iran between 1924 and 1980, were both formally recognized as protection symbols following a 1929 amendment to the Geneva Conventions. Controversy stemming from the movement's successive rejections of the Red Star of David, which was established in 1899 and has been used only in Israel, led to the creation of the Red Crystal as the fourth protection symbol by a vote in 2005. In 2006, the movement announced that it was officially adopting the Red Crystal as a neutral symbol and that it was also granting formal recognition to Israel's Magen David Adom alongside the Palestine Red Crescent Society.