Taking almost all his men and horses, Cortes rode out to meet his host at the great temple. When the Spaniards arrived, Montezuma was at the top of the temple making human sacrifices. Several Aztecs came forward to help Cortes to the top, but the Spanish captain general brushed them aside and mounted the 114 steps unaided.
At the top of the temple, Cortes and his companions were horrified to find the Aztec idols spattered with flesh and blood. The whole place reeked, and on the floor there was more blood, encrusted and black. Shocked and repelled by what he saw, Cortes tried to explain to the emperor-priest that these idols were no more than devils and that the sacrifice of humans was blasphemous.
The mighty Aztec, injured by the Spaniard’s remarks, said that his gods were good and that he regretted having allowed the Spaniards to visit the temple at all. Seeing that his host was angry, Cortes quickly made overtures to pacify the emperor and then departed.Cortes and the Aztec Conquest, by Irwin R. Blacker, p. 68