Religion in ancient Tamil country or monasteries, learned monks preached their sermons, seated in a place which was entirely concealed from the view of the audience. The Buddhists did not observe the distinctions of caste and invited all ranks to assemble on a footing of equality. Self-control, wisdom and charity were among the virtues preached and practiced by the monks, who were numerous in the ancient Tamil country. Christianity is said to be introduced in India by St. Thomas the Apostle who landed at Muziris on Malabar Coast in the year 52 AD. These ancient Christians are today known as Saint Thomas Christians or Syriac
North Malabar position of Kolathiri, although immensely respected, was politically titular. In North Malabar, the Kolathiri Kings had the ritualistic status of Perumaal such that their official designates or "sthanis" retained their jurisdiction all over Kerala except for the Rajarajashwara Temple at Taliparamba. The major festival observed by Hindus in this region is Vishu rather than Onam, which remains the major celebration for Hindus in the remainder of Kerala. In North Malabar, Vishu is celebrated as New Year. Because, the Kollavarsham month Medam - which is parallel to first Tamil month Chithirai - is the first month of the year for natives