The Malankara Mar Thoma Syrian Church exists as a hybrid church by blending the Eastern liturgical elements of the Oriental Orthodox Church and the evangelical ideas of the Protestant Reformation of the sixteenth century. This Church is a bridging church, connecting Protestantism and Oriental Orthodoxy. The reformation in the Malankara Church (1836) instigated a new impetus for this church in constructing an ecclesial identity and pattern of mission. A major missiological imperative employed by CMS missionaries in India was solely centered on the scripture. Against this popular understanding, the Mar Thoma Church, through its reformation process showed that liturgy can also be an imperative for mission. The translation and revision of the Eucharistic liturgy is the basic visible expression of reformation in the Malankara Church. Hence, this book explicitly places how the Eucharistic liturgy of the Mar Thoma Church is observed as the foundation for mission in its course of growth. In order to accomplish this objective, the writer has examined the historical evolution and the developmental process of the Eucharistic liturgy of the church, which is a revised version of the liturgy of St. James. In a nutshell, this study is an appraisal of various missiological themes reflected in the Eucharistic liturgy of the church. This study throws ample light on how the Mar Thoma Church integrated liturgy and evangelism in its course of development. The writer systematically illustrates how the church made a serious effort to bring missional themes employed in the liturgy into the practical realm by its ancillary organizations, convention gatherings, and sociocharitable works. This volume asserts that an emphasis on Eucharist-centred ecclesiology guides and motivates the church to enliven a mission-oriented life, which is crucial for accomplishing a relevant mission.