If I'm a first century Christian and I'm ... as the Empire went from persecuting the Church to sponsoring it, Christians no longer needed secret symbols to identify themselves.

As early as the first century ... practiced by immersion in the early church, created a parallel between fish and converts. Second-century theologian Tertullian put it this way: "we, little ...

Early Christian churches were often shaped like an octagon, which was an early Christian church symbol ... the first Christian state in the world. Dating to the mid-fourth century AD, it is ...