Researched by the Ignaria Editorial Team · Updated 2026-05-24
The early church's teaching on justification is rooted in the apostolic texts Paul established: faith alone is the instrument of divine acceptance, apart from works of the law. Clement of Rome (c. 96 AD) stated explicitly that believers are "not justified by ourselves, nor by our own wisdom... but by that faith through which, from the beginning, Almighty God has justified all men." Irenaeus affirmed that the church's faith has clear proof from Scripture and comes without interpolation from the apostles. But the early sources also contain qualifying voices: James insists that "by works a man is justified, and not by faith only," and Clement of Alexandria integrated grace with the formation of good works. Cyprian tied the remission of sins directly to baptism and the possession of the Spirit. The early church affirmed the Pauline principle of justification by faith, but embedded it within sacramental and ecclesial realities that the Reformers later distinguished from the article of justification itself.
Paul's Scriptural Foundation
Paul establishes the principle in several converging texts. Romans 3:28: "a man is justified by faith without the deeds of the law." Romans 3:20 establishes the negative: "by the deeds of the law there shall no flesh be justified in his sight: for by the law is the knowledge of sin." Galatians 2:16 presses the point as the first-person confession of Jewish believers who have come to Christ: "a man is not justified by the works of the law, but by the faith of Jesus Christ." Romans 10:8-9 defines the content of this faith as confessing Christ's lordship and believing in his resurrection. This cluster of texts establishes a clear apostolic principle: the righteousness that stands before God is received by faith in Christ, not earned by legal observance.
Clement of Rome and the Apostolic Chain
Writing around 96 AD, Clement of Rome echoes the Pauline principle with unmistakable directness: "We... are not justified by ourselves, nor by our own wisdom, or understanding, or godliness, or works which we have wrought in holiness of heart; but by that faith through which, from the beginning, Almighty God has justified all men." This is the earliest post-apostolic statement of what the Reformers would later call sola fide. Irenaeus affirmed that the church's faith rests on Scripture and is transmitted from the apostles without interpolation. Tertullian grounded doctrinal authority in agreement with the apostolic churches themselves: "all doctrine which agrees with the apostolic churches — those moulds and original sources of the faith — must be reckoned for truth." The chain of witness runs from Paul to Clement to Irenaeus and Tertullian, continuous and unbroken.
Qualifying Voices: James, Clement of Alexandria, Cyprian
The New Testament canon itself introduces a qualification: James 2:24 states that "by works a man is justified, and not by faith only." James addresses a situation where faith is claimed without visible fruit, insisting that genuine faith produces works as its evidence. Clement of Alexandria integrated this: "For by grace we are saved: not, indeed, without good works; but we must, by being formed for what is good, acquire an inclination for it." Grace saves, but believers must cooperate by forming habits of good. Cyprian situated the forgiveness of sins within the visible community of the Spirit: "in baptism every one has his own sins remitted... sins can only be put away by those who have the Holy Spirit." These voices do not contradict the Pauline principle but locate it within an ecclesial and sacramental context that the Reformation later analyzed with more precision.
What the Early Church's Witness Establishes
The early church consensus is that God justifies by faith in Christ, not by works of the law — Clement of Rome stated this in 96 AD with no ambiguity. What the early church did not do is isolate the article of justification from baptism, the Spirit, and the ecclesial community in the way the Reformers later would. The Reformation's "alone" sharpens a principle that was always present but not always analytically separated from the sacramental context in which it operated. The charge that sola fide is a 16th-century invention cannot survive Clement of Rome. The question the early sources leave open is whether the "alone" carries the analytical precision the Reformers gave it — a question Aquinas answered one way and Luther another.
What the primary sources show
"Therefore we conclude that a man is justified by faith without the deeds of the law."
"Knowing that a man is not justified by the works of the law, but by the faith of Jesus Christ, even we have believed in Jesus Christ, that we might be justified by the faith of Christ, and not by the works of the law: for by the works of the law shall no flesh be justified."
"Ye see then how that by works a man is justified, and not by faith only."
"We, too, being called by His will in Christ Jesus, are not justified by ourselves, nor by our own wisdom, or understanding, or godliness, or works which we have wrought in holiness of heart; but by that faith through which, from the beginning, Almighty God has justified all men."
"For by grace we are saved: not, indeed, without good works; but we must, by being formed for what is good, acquire an inclination for it."
"All doctrine which agrees with the apostolic churches — those moulds and original sources of the faith — must be reckoned for truth, as undoubtedly containing that which the (said) churches received from the apostles, the apostles from Christ, Christ from God."
"For since in baptism every one has his own sins remitted, the Lord proves and declares in His Gospel that sins can only be put away by those who have the Holy Spirit."