Among the last writings we have from Balthasar’s pen, this brief exposition of the Apostles’ Creed, originally published in 1989 by Herder, is something of a theological last will and testament that sums up his thought with extraordinary concision and depth. The book’s Leitmotif is God’s self-revelation as one and three; the divine triunity, Balthasar shows, determines the structure of the Creed, just as it determines the structure of the Christian faith. This is why he begins without preambles in mediis rebus: the claim that Christianity is nothing other than the reception of the self-gift of the God who is loving self-gift in his own eternal essence.