»New Testament Images of the Church in the Light of the Old Testament Scriptures« is the title of the thesis that provides an exegesis of New Testament images of the Church as bride, flock and Heavenly Jerusalem in the light of the most important Old Testament writings, with ecclesiological emphasis. The first chapter analyzes a passage from Epistle to the Ephesians 5: 21-33 in which Paul, giving moral guidance for the relationship between husband and wife in the Christian community, also looks at the Church as the bride of Christ, showing the deep connection between Christ and the Church that echoes throughout the theological thought. The second chapter is dedicated to a passage from John 10: 1-21 in which the people of God, ie the Church, are shown as a flock led by Christ the Shepherd. In this Gospel account we can read the communion of all the members of the Church in their diversity under the guidance of Christ. The third chapter, which analyzes a passage from Revelation 21: 1-27, presents a picture of the Heavenly Jerusalem as the eschatological novelty of the Church in which the entire restored creation is gathered. Pictorial representations and conceptions of people of God from The Old Testament, that in the New Testament are deepened and enriched, are therefore essentially influencing the theological understanding of the Church.