The teachings of the New Testament have many opposing tenants to the religion of ancient Greece. The Greeks believed that there was a plethora of god like creatures controlling the universe, such as the gods and the fates. Conversely, the bible clearly points out in the New Testament that there is only one true God. John 1 clearly affirms this position:
“1 In the beginning was the Word, and the Word was with God, and the Word was God. 2 He was with God in the beginning. 3 Through him all things were made; without him nothing was made that has been made. 4 In him was life, and that life was the light of all mankind. 5 The light shines in the darkness, and the darkness has not overcome it.”
Also the Greek pantheon of gods was constantly out of sync and warring with each other. While these gods were portrayed as very powerful, they were not omnipotent or omniscient. Many times humans were even able to thwart the plans of the gods. However, the Christian God displays all authority and power. He is completely omnipotent and omniscient. Jesus exhibits his dominance through all of the fantastic miracles he preformed while living on the earth.
Sacrifices played a major roll in the religions of many ancient civilizations. Nations would sacrifice a goat, a lamb, or even people for various reasons. Even Israel partook in the sacrificing of animals, but not humans however. Christians have no reason for sacrifices anymore, since Jesus paid the ultimate sacrifice for all of his chosen people. Jesus forgave the sins of men by taking the penalty of death on himself. Through his blood we are cleansed.