Changing My Theology on Baptism

I've just had an epiphany reading Barbara Brown Taylor's book, "The Preaching Life." In talking about vocation, she is hitting hard the idea of the priesthood of all believers. I am in the process of studying to take a Comprehensive Exam question on the whole idea of the Call to Ministry and what that means. Doing the historical background, many interesting things have cropped up. Not the least of which has been the distinction in Martin Luther, John Calvin and in most theologians since the Reformation to recognize the fact that we are all called to be involved in ministry. Salvation is a call to become part of the Body of Christ and the Body of Christ is the Church and the Church is the ministering community of Jesus Christ. So, what was the epiphany?
Simply put, I have been teaching baptism incorrectly. I have not been teaching it in any heretical way. I have simply been missing an opportunity to tell others the full meaning of the baptismal event. In leaving out this important piece, I have missed a great chance to help new believers understand what it means to be part of the priesthood of all believers. Here is what I read in Taylor:
"Our offices are the 'texts' of our lives, to use a dramatic term, but the 'subtext' is the common vocation to which we are all called at baptism."
Baptism is the act by which a believer makes a public declaration of his or her commitment to Christ. In that sense, it is the witness and testimony of the believer that they have received the grace of God and "enlisted in His service." It this dimension that my teaching on baptism has lacked. I have certainly taught that it is testimony and a response to the salvation which God has given. I have talked about the symbolic meaning of baptism in the public witness of Christ's death and resurrection. I have used it to tell about how our lives have "died" to the old life and that we are "raised" to a new life. However, I have never subscribed to the idea that baptism is what saves you. I have spent some time making sure that candidates understood what baptism would not do and not nearly enough time telling them what baptism will do. It seems to me that one of the key features of baptism is that the candidate is ordained to ministry. Not to the Office of Clergy but to the Office of Ministry. If the world is going to be changed by the message of the gospel in a post-Christian world, it will be because those who are ordained to the Office of Ministry at baptism understand that they are accepting a call to minister in the name of Jesus Christ.