C.S.I. ST. Thomas Church Nadikuda is a part of the Church of South India which is a Trinitarian Church that draws from the traditions and heritage of its constituent denominations which accepts the Chalcedonian Christological Definition, as well as the Apostles’ Creed and the Nicene Creed. Both creeds are included in the Church liturgy as the profession of faith. The Church practices infant baptism for children born in Christian homes and adult or believer’s baptism for others. Baptized children are members of the church and share in the privileges and obligations of membership so far as they are capable of doing so.

The Church of South India practices the rite of Confirmation, by which the confirmands (those being confirmed) upon profession of their Christian faith, obtain confirmation of their baptisms and thereafter, gets to partake fully in the privileges and obligations associated with Church membership. Secondarily, this is also a coming of age ceremony. Confirmation is almost always administered by a Bishop with the imposition of hands and occasionally by a Presbyter who is authorized to confirm.