If the eyes are the windows of the soul, then tattoos are the front yard of the soul. For centuries, we have scrolled our beliefs into our skin as both a personal reminder and as a billboard for the rest of the world to know as well.
Religious tattoos still remain one of the most common tattoo designs, especially for men.
The Traditional Symbol: The most common and most subtle of religious tattoos is the simplest. Using plain religious symbols without a lot of flourish makes a statement while still being reverent. A cross on the upper arm can be hidden when need be, but it still acts as a reminder when you are mindful of its presence. A crown of thorns around the upper forearm will be more visible for you to use it as a reminder of your beliefs and values.
Script: Using verses from a holy canon is less subtle but often more profound and more apt to bring awareness and awakening. Choosing a font that is not normally paired with religious text can bring a new look to a popular choice.
Metaphor: Scriptures are ripe with metaphor and parables. Using imagery from those stories can add more individuality to your ink. A sparrow or a lily on the inner arm would be both unique and increase the value of the sentiment.