triune God. In my opinion, this is a matter which determines the extent to which, if at all, we can remain really Christian theologians. The essays collected in this volume mark an attempt to trace, from various vantage points, the development of the earliest christological beliefs into the second article of the church’s creed. Here we are confronted by an (as yet) unresolved theological problem which already surfaces in Paul’s theology: how is God’s activity manifest through the Son and how can