RT Article T1 The Syriac tradition of the work of the Holy Spirit in the Church to make it One, Holy, Catholic and Apostolic JF International journal for the study of the Christian church VO 18 IS 2/3 SP 124 OP 131 A1 Aydin, Mor Polycarpus Augin LA English YR 2018 UL https://ixtheo.de/Record/166312955X AB This article, by Mor Polycarpus, Syriac-Orthodox Metropolitan of the Netherlands, describes the Holy Spirit, through the use of metaphors from both Old and New Testaments, drawing attention to the close purposeful link between the Incarnation and the sending of the Holy Spirit at Penteost. It then continues, under the heading of "The Holy Spirit in Liturgy", to illustrate the teaching to believers and the revelatory role of the Holy Spirit in "Praise", "Prayer", "Pentecost Prayer" and "Eucharistic Liturgy", using illustrations from the treasure of poetry for which the Syriac-Orthodox Church's liturgy is renowned and which speaks so eloquently of the Spirit's role in the unity, holiness, catholicity and apostolicity of the Church. K1 Holy Spirit K1 Pentecost K1 Syriac Eucharistic Anaphoras K1 Syriac-Orthodox Church K1 catholicity and apostolicity K1 Epiclesis K1 Holiness K1 Sanctification K1 Unity K1 worship in "spirit and in truth" DO 10.1080/1474225X.2018.1516428