Among the previously mentioned practices, the sacred and oldest ritual is Baptism.
Baptism is a ritual in which a person is being baptized to become the christian member of the Church by washing him with water.
Anciently the ceremony involves the dipping of the person completely or partially into the water.
later it was carried out by making the person to stand on water and water was being poured upon him.
Now the ceremony of baptism is made simple by sprinkling water three time to the forehead of the person by a religiously ranked.