ROOTED & GROUNDED
Theology for the thinking Christian | June 26, 2026
You are not merely forgiven. You are not merely saved. You are, right now, hidden inside the life of another person entirely.
Of all the things Paul could have said about what happens to a person when they come to faith, the phrase he reaches for most often is the strangest and most compressed: "in Christ." It appears, in various forms, more than 160 times across his letters. It is not ornament. It is the load-bearing wall of his entire theology. And for most of us, it has become so familiar that it has ceased to mean anything at all.
Consider what Paul actually claims in Romans 6. He does not say that baptism commemorates Christ's death, as if you were holding up a photograph. He says you were buried with him. "Do you not know that all of us who have been baptized into Christ Jesus were baptized into his death? We were buried therefore with him by baptism into death, in order that, just as Christ was raised from the dead by the glory of the Father, we too might walk in newness of life. For if we have been united with him in a death like his, we shall certainly be united with him in a resurrection like his" (Romans 6:3-5). The grammar here is not metaphorical distance but ontological proximity. What happened to him happened to you. His history becomes, in a real sense, your history. His death counts as your death. His rising pulls you forward into a life you could not have manufactured on your own.
This is what theologians call union with Christ, and it is the doctrinal heartbeat of the Christian life. It is not a downstream application of justification. It is the very bond within which justification, sanctification, and glorification are all enclosed. John Calvin, with characteristic precision, insisted that we must not think of Christ's righteousness as something contemplated from the outside, credited to us at a legal distance. Rather, we put on Christ. We are engrafted into his body. The benefits flow from the bond, not the other way around.
Paul makes the personal stakes staggering in Galatians 2:20: "I have been crucified with Christ. It is no longer I who live, but Christ who lives in me. And the life I now live in the flesh I live by faith in the Son of God, who loved me and gave himself for me." Notice that Paul does not say "I live for Christ" or even "I live like Christ." He says Christ lives in me. The Christian life is not an imitation game. It is a habitation. The old self, the one constituted by guilt and shaped by the dominion of sin, has been executed at the cross. What remains is a life that draws its vitality from another source entirely.
This has enormous practical weight. When you are tempted to reduce your faith to a set of moral commitments you are trying to keep, or to a set of doctrines you are trying to believe correctly, union with Christ reframes the question. The question is not primarily "am I performing well enough?" The question is "am I drawing from the vine?" The Christian life is not an achievement; it is a participation. You are not building something; you are receiving someone. John Murray captured the strangeness of this when he wrote that the union of God's people with Christ is the "greatest mystery of creaturely relationships," exceeding in its intimacy every other human bond, analogous in the end only to the unity within the Trinity itself.
Here is the challenge worth sitting with today: In what areas of your life are you still treating Christ as a resource to be consulted rather than a life to be inhabited? Where are you still performing Christianity from the outside, rather than drawing it from within? The risen Christ is not a distant helper. According to Paul, he is as close as your own breath. The question is whether you have learned to live from that nearness.
"That mystical union is accorded by us the highest degree of importance, so that Christ, having been made ours, makes us sharers with him in the gifts with which he has been endowed. We do not, therefore, contemplate him outside ourselves from afar in order that his righteousness may be imputed to us but because we put on Christ and are engrafted into his body: in short, because he deigns to make us one with him."
— John Calvin, Institutes of the Christian Religion, 3.11.10
Further Reading
- "Union with Christ" by Richard B. Gaffin Jr. (The Gospel Coalition) — A rigorous theological overview of every dimension of this doctrine, from its eternal roots to its eschatological fulfillment. Essential grounding.
- "5 Things You Should Know About Union with Christ" (Ligonier Ministries) — A clear, accessible entry point covering the reality, basis, and transforming implications of being united to Christ.
- "What Is Union with Christ?" (Desiring God) — A pastoral interview on how union with Christ is central to both justification and the day-to-day shape of the Christian life.
May you rest this week not in what you have done for Christ, but in what he has done in making you his own. You are not on the outside looking in. You are, by his grace, already inside the life of the one who conquered death. Go from there.