This paper analyzes the liturgical life and theological teachings of Archimandrite Aimilianos of Simonopetra, one of the leading theologians and spiritual figures of the Orthodox world in the 20th and 21st centuries. The central theme is the Liturgy as the center of Christian life, around which monastic struggle, personal prayer, and entire spirituality are built. Elder Aimilianos views the Liturgy as a personal relationship with Christ and the ultimate goal of life in the Church, while monastic asceticism serves as a continuous preparation for liturgical union with God. Special emphasis is placed on the hesychastic experience of the Jesus Prayer and the role of the celebrant in the liturgical gathering. The paper highlights that the Elder’s liturgical consciousness is deeply rooted in the sacramental experience of the Church, the tradition of hesychasm, and personal spiritual transformation. It is shown that his teaching provides a response to contemporary theological crises and points to a path for the renewal of church life. The study concludes that Elder Aimilianos offers an inspiring model of the synthesis of liturgical theology, monastic asceticism, and personal prayer, which is invaluable for the theological and spiritual future of the Orthodox Church.