Since I’ve been back, some people have been talking (in a helpful way I might add) about the nature of relations in the Trinity. The issue has to do with the subordination of the Son. On the one hand, I think evangelicals must affirm that there is no subordination in terms of being within the Trinity. This was condemned as heresy in 325 A.D. at the council of Nicaea. A helpful summary of this can be found on Wikipedia. This should be distinguished from the eternal subordination of the Son in relation to the Father. This is the function of Jesus. A helpful series of posts highlight this opinion at the Council for Biblical Manhood and Womanhood. I like how Grudem summarizes it:
The heresy of subordinationism, which holds that the Son is inferior in being to the Father, should be clearly distinguished from the orthodox doctrine that the Son is eternally subordinate to the Father in role or function: without this truth, we would lose the doctrine of the Trinity, for we would not have any eternal personal distinctions between the Father and the Son, and they would not eternally be Father and Son. (p.245, footnote 27)
Hope this helps clear up some confusing (and deep) theological waters.