The letter to the church in Sardis
What does a dead church look like, and how do you inject new life into it? The letter to Sardis answers both questions.
The historical background
Sardis had the longest history of any of the seven cities, and was ideally situated for it — perched on the edge of a mountain range, inside a fertile valley, with a favorable climate.
The city had always mattered. When a massive earthquake destroyed it in AD 17 — the worst natural disaster to strike the twelve cities of Lydia in living memory — it was rebuilt under imperial patronage, with Tiberius granting Sardis the largest relief sum of any affected city plus a five-year tax remission. Nine years later, in AD 26, the grateful city joined ten others in petitioning Rome for the further honor of building a temple to the emperor — but lost the contest to Smyrna, whose envoys successfully argued their city’s centuries-old loyalty to Rome.
Sardis was also a natural fortress, standing high above the valley floor on a ridge ringed by cliffs, yet not connected to any neighboring mountains. That position bred overconfidence: the city believed itself impregnable, yet enemies conquered it twice, both times by slipping in through the very places everyone assumed were unreachable — first by Cyrus the Great in 547 BC, whose soldier scaled an unwatched crack in the cliff face, and again by Antiochus III’s general Lagoras in 214 BC, using much the same trick on another side of the same acropolis.
Jesus’ view
Jesus approaches this church as the one who holds the fullness of the Spirit and the seven stars — the angels of the churches.
There is little praise here — only a handful of believers in the church are called blameless — and a great deal of censure instead: the church is dead, its works are incomplete, and it needs to act quickly if it wants to recover any real purpose. So what has gone wrong?
The problem
The core problem is a false sense of self-importance. The city’s own overconfidence in its impregnable position has rubbed off on the church, which has come to believe it can function without the power of the Holy Spirit. Twice in its history, Sardis was blindsided by an enemy that found the one unguarded approach the city never thought to watch — and that is exactly the warning Jesus gives the church: if you do not wake up, I will come like a thief, and you will not know at what time I will come to you.
The description of the church as dead, in need of waking up before what remains also dies recalls the vision of the valley of dry bones in Ezekiel, where the Spirit comes and breathes new life into what was dead. Likewise, the charge that Jesus has “found your deeds incomplete in the sight of God” points to a church going through the motions of activity without the Spirit behind it — work that looks like something but, in God’s sight, isn’t finished at all.
Life without the Holy Spirit simply isn’t sustainable. Sardis needs to act quickly, or the Lord’s return will take the church entirely by surprise — just as its own acropolis was taken, twice, by enemies who found the one gap in its defenses.
The promise
White robes here evoke purity and victory — the “righteous acts of God’s holy people” pictured later in Revelation (19:8) — set against a church that has “soiled its clothes” through compromise. The promise that their names will not be blotted out of the Book of Life means they will not lose their citizenship in heaven — though this promise belongs only to those who repent.
This letter, in the end, is a wake-up call, meant to shock a dying church back into action.