Religion

The religion of the Aztecs was incredibly complicated, partly due to the fact that they inherited much of it from conquered peoples. Their religion was dominated by three gods: Huitzilopochtli ("hummingbird wizard," the native and chief god of the Tenochca, Huitzilopochtli was the war and sun god), Tezcatlipoca ("Smoking Mirror," chief god of the Aztecs in general), and Quetzalcoatl ("Sovereign Plumed Serpent," widely worshipped throughout Mesoamerica and the god of civilization, the priesthood, and learning). Below these three gods were four creating gods who were remote and aloof from the human world. Below these were an infinity of other gods, of which the most important were Tlaloc, the Rain God, Chalchihuitlicue, the god of growth, and Xipe, the "Flayed One," a god associated with spring.

The overwhelming aspect of Aztec religious life in the imaginations of non-Aztecs was the predominance of human sacrifice. This had been practiced all throughout the Mesoamerican world, but the Tenochca practiced it at a scale never seen before or since. We don't know a great deal about the details, but we have a fairly good idea of its general character and justification. Throughout Mesoamerica, the theology involved the concept that the gods gave things to human beings only if they were nourished by human beings. Among the Maya, for instance, the priests would nourish the gods by drawing their own blood by piercing their tongues, ears, extremities, or genitals. Other sacrifices involved prayer, offerings of food, sports, and even dramas. The Aztecs practiced all of these sacrifices, including blood-letting. But the Aztec theologians also developed the notion that the gods are best nourished by the living hearts of sacrificed captives; the braver the captive, the more nourishing the sacrifice. This theology led to widespread wars of conquest in search of sacrificial victims both captured in war and paid as tribute by a conquered people.

Great Temple Stairs, Mexico City
We can successfully reconstruct Aztec human sacrifice with a high level of accuracy. Some sacrifices were very minimal, involving the sacrifice of a slave to a minor god, and some were very spectacular, involving hundreds or thousands of captives. Aztec history claims that Ahuitzotl (1468-1502), who preceded Mocteuzma II as king, sacrificed 20,000 people after a campaign in Oaxaca ("O-a-sha-ka"). No matter what the size of the sacrifice, it was always performed the same way. The victim was held down by four priests on an altar at the top of a pyramid or raised temple while the officiant made an incision below the rib cage and pulled out the living heart. The heart was then burned and the corpse was pushed down the steep steps; a very brave or noble victim was carried down the steps. The most brutal of human sacrifices were those dedicated to the god Huehueteotl. Sacrificial victims were drugged and then thrown into a fire at the top of the ceremonial platform. Before they were killed by the fire, they were dragged out with hooks and their living hearts were pulled out and thrown back into the fire.

While human sacrifice was the most dramatic element of Aztec sacrifice, the most common form of sacrifice was voluntary blood-letting which occurred at every religious function. Such blood-letting was tied to rank: the higher one was in social or priestly rank, the more blood one had to sacrifice.

There was an urgency to all this sacrifice. The Aztec believed that the world was controlled by divine forces that were in constant conflict and opposition to one another. The universe was poised between conflicting forces of creation and destruction; human beings could, in part, influence this balance through the practice of sacrifice.

In addition to sacrifice, the Aztec religion, like the Mayan religion, was dominated by calculations of time. The Aztecs had several calendars; each day was controlled by two gods, each of which had a benificient and a malevolent aspect. In a complex series of astronomical calculations, one could precisely determine how to behave and what to do in order to achieve the best results.

It is not unfair to say that Aztec culture was overwhelmingly eschatological in a way that can only be rivalled by early Christianity. The Aztecs, like the Mayans, believed that the universe had been created five times and destroyed four times; each of these five eras was called a Sun. The first age was called Four Ocelot (for it began on the date called Four Ocelot). Tezcatlipoca (Smoking Mirror) dominated the universe and eventually became the sun disk. The world was destroyed by jaguars. The second age was Four Wind, dominated by Quetzalcoatl (Sovereign Plumed Serpent); men were turned to monkeys and the world was destroyed by hurricanes and tempests. The third age was Four Rain, dominated by Tlaloc (the rain god); the world was destroyed by a rain of fire. The fourth era was Four Water and was dominated by Chalchihuitlicue (Woman with the Turquoise Skirt); the world was destroyed by a flood. The fifth era, the one we live in now, is Four Earthquake, and is dominated by Tonatiuh, the Sun-God. This age will end in earthquakes.

The Aztecs had two calendars: the ritual year and the solar year. The ritual year lasted for 260 days and the solar year lasted for 365 days. Every fifty-two years these two calendars would resynchronize; the Aztecs, then, lived in 52-year cycles. In Aztec religion, the destruction of every era always occurred on the last day of each 52 year cycle (although each era lasted for several of these cycles). Every 52 years, then, the Aztecs believed that the world was about to end and the close of the 52 year cycle was the most important religious event in Aztec life for this period was the most dangerous period in human life. This was the time when the gods could decide to destroy humanity. Every cycle ended with the New Fire Ceremony. For five days before the end of the cycle, all religious altar fires were extinguished and people all over the Aztec world destroyed furniture and possessions and went into mourning for the world. On the last day, the priests went to the Hill of the Star, a crater in the Valley of Mexico, and waited for the constellation of the Pleiades to appear. If it appeared, that meant that the world would continue for fifty-two more years. The priests would light a fire in an animal carcass, and all the fires of the Valley of Mexico would be lit from this single fire. The day after saw sacrifices, blood-letting, feasting, and renovation of possessions and houses.

Ref: http://www.wsu.edu/~dee/CIVAMRCA/AZTECS.HTM