For fruitful discussion within the Church, for a meaningful dialogue with other Christians, for the renewal of the theology of preaching -- for these and many other reasons, we need a new understanding of the nature of revelation. The usual apologetical treatment of revelation, bent on proving its existence, touches but the fringe of the reality. Our day and age needs a theology of revelation which probes the nature, depths and dimensions of the mystery. This study is a significant contribution in this unfurrowed field, and may well be recognized as a landmark for years to come.