Greek Religion

Most of ancient Greece worshipped the same pantheon of gods, but particular city-states selected their favorite god or goddess  above all others.  In Athens the Goddess of Wisdom, Athena, was the goddess most honored.  The Parthenon "The Temple of the Virgin" was built for her.  
       Greek religion was a buffet-style of worship.  An ancient Greek was not expected to  worship to every deity.  (With dozens of gods, worshiping them all would be too much.)  As long as a Greek recognized some higher power, it did not matter which god or goddess he chose.  Gods and goddesses had certain demographic groups:  unmarried women worshiped Artemis, wives worshiped Hera, sailors favored Poseidon, athletes praised Apollo, etc.
         Temples were considered to be the dwelling places of the gods they honored.  Typically they included a statue or image of the god or goddess worshiped.  Cattle, goats, sheep, and swine were sacrificed by the temple priests.  After killing the beasts, the priests would examine its organs.  If the organs were still undamaged and healthy, it was considered a good omen.  If the organs were corrupted and rotten, it was an unlucky sign.  This was one means the Greeks had of determining the future.  After the blood had been offered as a sacrifice, the priests took the animal's meat and cooked it.  Many sacrifices were followed by a feast, where the cooked meat was served.  In Greece the word sacrifice was synonymouswith feast.
         The Greeks also believed in augury, the technique of telling the future by watching the flight patterns of birds.  Sighting certain birds was fortuitous, while seeing others was a bad sign.  (Spotting an owl in daylight indicated death.)
        Two things above all others were sacred to the Greeks: proper burial and hospitality. Anyone who murdered or dishonored a guest in Greece was guilty of a capital offense, as well as anyone who failed to properly bury a dead body.