The most likely author of 2 Corinthians 3:6 is the Apostle Paul. From an evangelical Christian perspective, Paul is regarded as one of the primary figures in the New Testament and the author of many of its letters, which are often referred to as epistles.

**Context of 2 Corinthians 3:6:**
In this verse, Paul contrasts the ministry of the Old Covenant (the Law) with the ministry of the New Covenant (the Spirit). He states, “He has made us competent as ministers of a new covenant—not of the letter but of the Spirit; for the letter kills, but the Spirit gives life.” This verse emphasizes Paul’s teaching that while the Law has its place, it is ultimately the Spirit that brings true life and transformation.

**Paul’s Background:**
– **Formerly a Pharisee:** Paul, originally known as Saul of Tarsus, was a Pharisee who passionately persecuted early Christians before his dramatic conversion on the road to Damascus (Acts 9). His transformation from a persecutor to a proponent of the Gospel is a central narrative in Christian history.
– **Apostolic Authority:** After his conversion, Paul became an apostle, meaning he was a messenger and representative of Jesus Christ. He traveled extensively throughout the Roman Empire, planting churches and preaching the Gospel.
– **Theological Contributions:** Paul’s letters address various theological, ethical, and practical issues facing early Christians. His writings have profoundly shaped Christian doctrine, particularly regarding themes like grace, justification, and the role of the Holy Spirit.

**Relevance of the Verse:**
2 Corinthians 3:6 is often cited in discussions about the nature of the Christian life, the role of the Holy Spirit, and the significance of the New Covenant. Evangelicals interpret this verse as a call to rely on the power of the Holy Spirit rather than mere adherence to the Law, emphasizing a relationship with God characterized by spiritual vitality rather than legalistic observance.

In summary, from an evangelical perspective, Paul is seen not just as the author of 2 Corinthians but also as a vital theologian whose writings continue to inspire and instruct Christians today.