When Paul was at Athens, he infamously made mention of “an altar with this inscription, ‘TO AN UNKNOWN GOD'” (Acts 17:23). A number of altars to “unknown” Greco-Roman deities have been discovered at Palmyra, an active trade hub in the Roman east (located in modern Syria). An example can be seen here. No such altar has yet been uncovered at Athens, but there is a contemporary  example from ancient Rome. This altar to an unknown god was discovered on Palatine Hill in Rome in the 1820’s. Palatine Hill was the location of......