Sumário:Defining religion : mission impossible? The difficulties with defining religion. Institutional concerns : religious questions and judicial competence -- Definitional tests and constitutional protection: Definition of religion or religious practice. Pledge and anthem ceremony: religious vs. philosophical commitments in Singapore. Face veil : religious vs. customary practice in Malaysia. Religious freedom and the essential practice test in Malaysia. Allah as the Christian god? The essential practice test in Malaysia. Wearing the serban/turban : essential practice for Muslim boys? Criticism of the definition of religion and essential practice tests.