Here is an excerpt from the article.
"Platonic ideas began making inroads into Christian theology through the writings of Philo (ca. 20 BC–AD 50). An Alexandrian Jew, Philo admired Greek culture and was enamored with Plato’s philosophy. He was also proud of his Jewish heritage. In his desire to offer the Greeks the best of Judaism and the Jews the best of Greek philosophy, he allegorized Scripture. He did so in contrast to the literal interpretation of many rabbis.351
Philo’s ideas caught on. Alexandria became the home of a new school of theological thought. Clement of Alexandria (150–215), an early church father, was a part of this movement, as was Origen (185–254), an Egyptian-born Christian writer and teacher. Clement embraced Greek philosophy and maintained that Scripture must be understood allegorically. Origen developed an entire system of allegorizing Scripture. His method was to see the Bible as a three-part living organism, corresponding to body, soul, and spirit. The body was the literal or historical sense, the soul was the psychic or moral sense, and the spirit was—by far most important—the philosophical sense."
The whole article is here.