In his article, “Not Two Kingdoms, But Two Ages,” Jonathan Leeman proposes a doctrine of two ages as a helpful paradigm for understanding the relationship between the church and the world. Building on the political theology of Oliver O’Donovan and recent developments in New Testament studies, Leeman offers this as a helpful corrective to various “doctrines of the two” at play in church history, including that of the two kingdoms, which Leeman identifies with Martin Luther.
In fact, there’s good precedent for Leeman’s proposal, and it comes from none other than the 16th-century reformer John Calvin. Ironically, though, Calvin presented his theology in precisely the terms that Leeman opposes: two kingdoms. As I show in my forthcoming book, Calvin’s Political Theology and the Public Engagement of the Church, Calvin’s two kingdoms theology was nothing if not a two ages eschatology. It was his attempt to explain how the future kingdom of Christ (the age to come) breaks into the present age even while the present age continues. The two ages overlap, and Christians inhabit both at the same time. As a result, Christians are subject to a “twofold government,” to two different kinds of authorities, which Calvin called two kingdoms (Institutes 3.19.15).
Calvin often described these two kingdoms by distinguishing between what’s earthly and what’s heavenly in human beings, or between what’s inward and what’s outward. But Calvin didn’t use these terms to denote a dualistic view of humans any more than the apostle Paul when speaking of the contrast between flesh and Spirit.
Rather, Calvin used “inward” and “heavenly” to refer to the age to come, which breaks into this age through the inward work of the Holy Spirit in the life of believers—even as from an outward and earthly perspective things seem to go on as they always have, under the shadow of death and decay.
Read the rest of this article at The Gospel Coalition.