In this article, the ecumenical heritage of the United Congregational Church of Southern Africa is described by the General Secretary of that church. The early history of the UCCSA, related to the London Missionary Society, created a sense of self-awareness that led to the unification of racially divided congregational churches during 1967. This set the ground for the active involvement of the UCCSA in the political liberation processes in Southern Africa. In addition, the UCCSA ‘s continued exploration of further ecumenical endeavours is traced. The covenental theology of the UCCSA forms a unifying thread throughout these processes.