How the earliest Christians of India absorbed Hindu traditions

By the time the Portuguese arrived in India in the fifteenth century, the earliest group of Christians in India had already been exposed to thirteen centuries of Indian religious traditions, which were bound to be absorbed by them. Historians argue that by the end of the second century of the Christian era, there definitely existed a Christian community in both south east and south west of India. However, due to political reasons, majority of the Christians migrated to the Chera kingdom of Malabar.