The Church's mission in the world is to be a sign and instrument for the realization of the Kingdom of Life, Justice and Freedom promised by God. This task entrusted by Jesus Christ, as a missionary mandate, cannot be accomplished without Christian Hope. Object of study of this research. The objective is to demonstrate the relevance of Christian Hope in the Light of Jürgen Moltmann's Theology of Hope for contemporary man. Therefore, this research initially rescues the life and work of our author, scrutinizing his existential experience and systematization of theological thought in the context of the second war, and in the context of new theological discussions and scientific and cultural effervescence of his time. Moltmann develops a hermeneutic and contextual theology, assuming in his theological work the Christian hope as the hermeneutical principle of all theology. In this sense, our author rescues the centrality of Eschatology for the unity of theological thought. In his rereading, Moltmann identifies eschatology with the Doctrine of Christian Hope. Based on this assumption, this research initially seeks to understand the anthropology on which the present work is based, to then seek the biblical-theological roots of Christian Hope. From an anthropology that conceives the human being as subject of hope and recipient of promise, our author rescues the Old Testament roots that point to the primordial foundation of hope in the New Testament, the event of Christ. Moltmann develops an eschatological Christology in the Theology of Hope. In this sense, hope as an active principle reveals historical-transforming perspectives of reality. A virtue that is historically assumed in an eschatological key, from the Ethics of the Promised Kingdom. Christian Ethos is based on the ethics of hope lived by the people of God as an exodus community. In a mission and vocation in society through an active, anticipating participation in the Kingdom of Justice, Life and Freedom promised by the God of Hope, manifested in the Old Alliance, but based on the resurrection Christ.