It is suggested that a clear prophetic voice of the congregational gathering could change the society to which the congregants belong. The problem is that this prophetic voice seems to have disappeared in many cases. A solution might be found if the point of view is taken that the prophetic voice in the congregational gathering is heard in the liturgical acts or rites. In the science of Liturgy attention must be given to the revitalisation of the gift of prophesy. In (...) this article the prophetic testimony of the Old Testament prophets and of the Prophet, Jesus Christ, were used as sources. Following in the footsteps of Brueggemann, an effort will be made to establish in relevant scripture passages what the attitude and practise of prophetic testimony should be. The possibility of rendering service through prophetic testimony as a liturgical act in the South African society is wide open. Prophetic testimony serves to criticise the dominant perception in order to dismantle it, but is also serves to energise persons and communities by its promise of another time and situation towards which the community of faith could move. (shrink)