Religious: Christian

Religions have existed from the dawn of human history, and almost always include unique iconography, or symbolic representations of the stories told within the religion, examples of which are often worn as adornment to indicate adherence to that particular religion's belief structure.
Christian iconography includes: Cross; Fish; Dove; Lamb; Anchor; Heart; Lion
The Merriam-Webster Dictionary tells us that Christianity is, "the religion derived from the teachings and being of Jesus Christ, based on the Bible as sacred scripture, and professed by Eastern, Roman Catholic and Protestant bodies."