The most-likely author of Romans 6:23 is the Apostle Paul.

Why Paul is identified as the author
– The letter itself names Paul as the writer (Romans 1:1; 1:7).
– Early church testimony and the manuscript tradition consistently attribute Romans to Paul.
– Evangelical scholars and most Christian traditions accept Pauline authorship as historic and reliable.

Who Paul was (evangelical summary)
– A Jew from Tarsus (Acts 22:3; Acts 9), trained as a Pharisee under Gamaliel (Acts 22:3; Philippians 3:5).
– Originally a zealous persecutor of the early church (Acts 8:3; 9:1–2).
– Converted on the road to Damascus by an encounter with the risen Christ (Acts 9), after which he became a missionary and church planter.
– Traveled on multiple missionary journeys planting churches across Asia Minor and Greece, carried out lengthy ministry in places such as Antioch, Corinth, and Ephesus.
– A tentmaker by trade (Acts 18:3) and a Roman citizen (Acts 22:25–29), which gave him certain legal protections and shaped aspects of his ministry.

When and why Romans was written
– Romans was written during Paul’s third missionary journey, commonly dated around AD 55–58 (many place it about AD 57), probably written from Corinth while Paul was preparing or hoping to go to Spain and to visit Rome (Romans 15:23–24).
– The epistle was written to the church in Rome—both Jewish and Gentile believers—and aims to present a systematic exposition of the gospel, address tensions between Jewish and Gentile Christians, and prepare for Paul’s planned visit and mission to the west.

Romans 6:23 in Paul’s theology (evangelical perspective)
– Romans 6:23 reads, “For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord.” From an evangelical viewpoint this verse encapsulates several core truths Paul teaches:
– Human sin carries a real and deserved penalty: spiritual death and ultimately physical death and separation from God. This affirms humanity’s need for rescue.
– Salvation is not something we earn; it is a free gift of God (contrast “wages” with “gift”) received by faith. This echoes Paul’s central theme of justification by grace through faith (see Romans 3–5).
– The gift is specifically “eternal life” and is found “in Christ Jesus our Lord,” emphasizing that Christ’s person and work (atonement, resurrection, lordship) are the basis for salvation.
– Evangelicals often use Romans 6:23 in evangelism (part of the “Romans Road”) and as a succinct summary of the gospel: the reality of sin and death, and the provision of eternal life by God through Christ.

Paul’s authority and the evangelical view of Scripture
– Evangelicals affirm Paul as an apostle chosen and commissioned by Christ (Galatians 1:1; Romans 1:1) and hold his letters as inspired Scripture (2 Timothy 3:16). Romans, including 6:23, is treated as authoritative teaching for doctrine and life.

Practical application emphasized by evangelicals
– Recognize personal sin and its consequences.
– Trust Christ alone for the free gift of eternal life.
– Live in the freedom and newness of life that Christ provides (consistent with Romans’ call to sanctification, e.g., Romans 6).

If you’d like, I can provide a short biography of Paul with key dates, maps of his journeys, or explain how Romans shaped Reformation and evangelical convictions (e.g., justification by faith).