CHRISTIANITY AS VERNACULAR RELIGION: A STUDY IN THE THEOLOGICAL SIGNIFICANCE OF MOTHER TONGUE APPREHENSION OF THE CHRISTIAN FAITH IN WEST AFRICA WITH REFERENCE TO THE WORKS OF EPHRAIM AMU (1899-1995) PHILIP TETTEH LARYEA A THESIS SUBMITTED TO THE UNIVERSITY OF KWAZULU-NATAL FOR THE DEGREE OF DOCTOR OF PHILOSOPHY SEPTEMBER 2006