During the Hellenistic period, Alexander the Great's campaigns brought about exchange of cultural ideas on its path throughout most of the known world of his era.
Philo of Alexandria (c.25 BCE - c.50 CE) attempted to reconcile Greek Rationalism with the Torah, which helped pave the way for Christianity with Neo-Platonism, and the adoption of the Old Testament with Christianity, as opposed to Gnostic Marcion roots of Christianity.