dogma

Cross - Christian symbol, cross on its side, symbol of Jesus carrying his cross

Fish - Ichthys, Fisher of men reference to Jesus, first Christian symbol, rebirth, fertility

Menorah - first Jewish symbol, pre 1700s, lighting of the candles, endurance, eternal nature of God

Crescent Moon and Star - Islamic symbol, astronomy, observing of moon in calendar, 5 pointed star 5 pillars of Islam

Yin Yang - Buddhist, balance dark in light and light in dark, good and evil

Noble Eightfold Path - Buddhist path of liberation : right view, right aspiration, right speech, right action, right livelihood, right effort, right mindfulness, right concentration.

Sacred Heart - Catholic symbol of the ever burning love of Christ, usually containing the spikes

Farahavar - Zoroastrian symbol, ancient Persian religion that followed the natural cycles of the seasons and assigned symbolism

Hammer & sickle - The workers and the peasants, symbol of proletarian unity, symbol of communism, belief system