The Law of God, first codified by Moses, was not static. The Bible shows that under divine instruction, figures like
Samuel (1 Sam. 10:25) and
Joshua (Josh. 24:26) added to it.
Ezra later edited and added to the Law when canonizing the Old Testament. These developments were part of
God’s pattern of progressive revelation, showing that laws could be modified, expanded, or fulfilled as God saw fit.
Christ’s earthly ministry did not initiate Christianity as we know it. Instead, it was the
culmination and magnification of the Mosaic Law, intended solely for Israel. Jesus emphasized the heart and spirit behind the law (e.g., Mat. 5:27–28), showing that law-keeping could never bring salvation. His death and resurrection marked the true beginning of the
New Covenant and Christian salvation — not by law, but by
grace through faith (John 1:17; Gal. 2:20).
Paul’s gospel diverged sharply from Jesus’ earlier teachings to Israel under the Old Covenant. Paul emphasized that
salvation came only through Christ’s death and resurrection, not through the commands Jesus gave during His life. He argued that post-resurrection, believers no longer relate to Christ "after the flesh" (2 Cor. 5:16).
Initially, the Gospel was
preached only to Jews (Matt. 10:5–6; Acts 2–3). The inclusion of
Gentiles did not begin until Peter's vision and the conversion of
Cornelius (Acts 10), a "God-fearer" familiar with Jewish customs. This paved the way for
Paul’s ministry, which taught that Gentiles must be spiritually
grafted into Israel to partake in the New Covenant (Rom. 11; Gal. 3:26–29; Eph. 2:11–12).
According to Paul, Gentiles could not be saved as Gentiles; they had to become
spiritual Israelites, being "in Christ" who is the true Seed of Abraham. This allowed them to inherit the promises originally given only to Israel (Jer. 31:31–34).
A major theological conflict arose:
Should Gentile converts adopt Jewish customs like circumcision, Sabbath-keeping, and dietary laws? Paul strongly opposed requiring such observances for salvation, a stance detailed in Acts, Galatians, and Corinthians. He emphasized
freedom from the Law, asserting that the new life in Christ replaces the old written code with the
unwritten law of the Spirit engraved on believers' hearts.
The Galatians’ Problem
The Galatians had been misled by some from Jerusalem who claimed that salvation required circumcision and adherence to the Mosaic Law. Paul rebukes them sharply:
“O foolish Galatians, who has bewitched you...?” (Gal. 3:1)
In Galatians 3, Paul explains the purpose of the Law:
- It was based on works and brought a curse (Gal. 3:2, 10)
- It increased transgressions (Gal. 3:19)
- It was delivered by angels, not directly by God (Gal. 3:19)
- It offered no life and was not rooted in faith (Gal. 3:21, 23)
- It served as a temporary “schoolmaster” leading to Christ (Gal. 3:24–26)
Paul emphasizes that Christians are no longer under the Law but live by the Spirit, marked by love, joy, peace, and faith (Gal. 5:22–23).
“Stand fast... and be not entangled again with the yoke of bondage.” (Gal. 5:1)
The Revelation of “The Mystery” (63 C.E.)
Around 63 C.E., Paul received a final revelation, which he called “The Mystery” (Eph. 3:4–5, 9; Col. 1:26). This teaching had been hidden since the beginning of time and revealed a deeper, mature stage of God’s plan.
Key distinctions:
- It went beyond both the Old and New Covenants.
- It emphasized the unity of all believers—Jews and Gentiles—in Christ.
- It finalized earlier Gospel teachings with expanded understanding.
Paul’s new insights were not well-received.
Many former supporters abandoned him (2 Tim. 1:15; 4:10). Even though Peter eventually affirmed Paul’s wisdom (2 Pet. 3:15–16), most Christians rejected this radical message.
Core Doctrinal Shifts in “The Mystery”
Paul's revelation redefined:
- Salvation – by grace alone, apart from law or ritual.
- Inheritance – shared equally among all believers.
- The Body of Christ – a new, unified spiritual organism.
- Israel’s Role – no longer central to God’s plan.
- Religious Practices – such as festivals and sabbaths, now obsolete.
- Our Position in Christ – seated with Him in the heavenly places (Eph. 2:6).
Though not a “new gospel,” “The Mystery” was the completion of the Gospel—God’s original, secret plan now revealed to all.
Contrast Number One
Earlier Gospel: Peter taught that Christians should “grow in grace and knowledge” (2 Peter 3:18) and Jesus said the Holy Spirit would reveal more truths later (John 16:12–13).
Mystery: Paul explained that the "Mystery" was God's final revelation, completing the Gospel and showing how Christ is “the Fulness of the Godhead bodily” (Colossians 2:9–10). This teaching, once incomprehensible to the apostles, was revealed around 62/63 C.E. to mature believers.
Contrast Number Two
2.
Earlier Gospel: Gentiles could be saved by being grafted into Israel, but they had to identify with Israel to inherit God's promises (Romans 11:11–25).
2.
Mystery: With "the Mystery," all people—Jews and Gentiles—are united as “one new creation,” not defined by their ethnicity but by their status in Christ (Ephesians 3:6; Colossians 3:10–11). Citizenship is now heavenly, and believers are united with Christ in His exalted position (Ephesians 2:6; Colossians 3:1).
Contrast Number Three
3.
Earlier Gospel: Being "in Christ" meant blessings like spiritual purity and anticipation of the future New Covenant, with a focus on a coming judgment (Romans 14:10–11; 2 Corinthians 5:10).
3.
Mystery: In the “Mystery,” Christians are not just “Israelites,” but a new humanity with heavenly citizenship, united with Christ in His eternal glory (Ephesians 2:6; Colossians 3:1–4). The Judgment has already been passed with Christ, and believers share His divine status.
Contrast Number Four
4.
Earlier Gospel: Christians could miss out on Kingdom rewards if they lived in deliberate sin (1 Corinthians 3:10–15; Hebrews 10:16–31).
4.
Mystery: Even in the mature Gospel of “the Mystery,” one can miss the first resurrection if they persist in sin (Philippians 3:11; Ephesians 5:3–5). Salvation is certain, but full participation in God's Kingdom requires righteous conduct.
Contrast Number Five
5.
Earlier Gospel: The early Gospel involved Jewish customs like circumcision and baptism, with apostles as mediators and forgivers of sins (Acts 15).
5.
Mystery: With “the Mystery,” human mediators are no longer needed, as all believers are united with Christ, having participated in His life, death, and resurrection (Colossians 2:11–13). Christ became the perfect substitute for all requirements, and believers now meet all divine expectations through Him.
The teaching of “the Mystery” represents a more advanced understanding of the Gospel that surpasses the earlier, partial Gospel. It reveals the believer’s divine position “in Christ” and emphasizes a shift from earthly to heavenly citizenship, with a focus on spiritual unity, divine grace, and eternal reward.
What Are the Teachings of "The Mystery"?
The first principle of "the Mystery" is that since 63 C.E., Christians are no longer considered as Jews or Gentiles in God's eyes. Initially, Jewish and Gentile Christians had different religious obligations, but the New Covenant replaced the Law of Moses with faith and love. Baptism and the Lord’s Supper became the primary observances. "The Mystery" introduces a new legal status for Christians, where both Jews and Gentiles are unified as one body in Christ.
The Prime Teaching of "The Mystery"
The central teaching is that all Christians are "in Christ," and Christ is "in" all Christians. This status places believers in a high, heavenly position, as described in Colossians 1:27-28, with the ultimate hope of divine glory. This position was established before the world was created (Ephesians 1:4), highlighting that our salvation and divine status were secured in Christ from the beginning.
Christ’s Actions and Our Legal Standing
Christ's acts, like His circumcision, baptism, death, and resurrection, are imputed to Christians.
When Christ was baptized and crucified, Christians were spiritually "in Christ," legally sharing in these events. Through His resurrection, Christians are also considered raised with Him (Colossians 3:1).