R. Albert Mohler, Jr. writes, “theological seriousness and maturity demand that we consider doctrinal issues in terms of their relative importance. God’s truth is to be defended at every point and in every detail, but responsible Christians must determine which issues deserve first-rank attention in a time of theological crisis.” We can understand this claim to refer to different areas of doctrine. For example, Mohler writes, “Third-order issues are doctrines over which Christians may disagree and remain in close fellowship, even within local congregations. I would put most of the debates over eschatology, for example, in this category.” But if someone claims Jesus already returned, physically, shouldn’t that eschatological issue be categorized as a first-level theological issue? Alternatively, Mohler allows room for disagreement over something he would categorize as a first-level theological issue, like the doctrine of the Trinity, at least with respect to, for example, the affirmation or denial of the eternal functional subordination of the Son.