The most striking thing about both the Apostles Creed and the Nicene Creed is what they leave out. For example, they say absolutely nothing about the key teaching of Jesus about the kingdom of God, which includes the entire ethic of social justice – the theme both of Old Testament prophets and of Jesus. This theme of the reign of the kingdom of God, which totally dominates the synoptic gospels – Paul gives it exceedingly short shrift, mentioning it only a few times in contrast to the scores of instances in Matthew and Luke – is simply not present in the creeds. The more one thinks about this the more astonishing it becomes. However, other omissions are just as difficult to explain: for example, the Sermon on the Mount’s ethic of the Golden Rule, or the vital Jesus-teaching (and of course, Pauline as well) about the way of love and forgiveness as the hallmark of Christ-like living.
(from New Creeds; published in The Emerging Christian Way)