Part I: The modern context: theological and anthropological dimensions of the liturgy. History of the theology of the sacraments: salient features -- Human sciences and sacramental theology -- Part II. History of salvation and Christian liturgy. History of salvation -- The experience of the transcendent ground of all being -- The liturgy and other basic activities of the church -- Part III. The mystery of Christian worship. Theology as theology of the liturgy -- Theology of the liturgy as theology of the trinity -- The economic and immanent Trinity -- The procession and bestowal models -- The yield of the processional model: incarnation and grace -- The yield of the bestowal model: incarnation and grace -- The mystery of the liturgy and its celebration -- Part IV: Systematic theology of the sacraments: perspectives and principles -- Basic dimensions of sacramental theology -- The concept and constitution of the Christian sacraments -- The seven sacraments of the church -- A short history of the theology of word and sacrament -- The modes of Christ's presence in the liturgy -- Active participation in sacramental celebrations -- The efficacy of the sacraments -- Conclusion.