The most likely author of 2 Thessalonians is the apostle Paul, according to evangelical Christian perspective. Paul was a key figure in the early Christian church and is believed to have authored many of the letters found in the New Testament, including 2 Thessalonians.

From an evangelical Christian perspective, Paul was a devout follower of Jesus Christ who spread the message of the gospel throughout the Roman Empire. He faced persecution and hardship for his faith and was instrumental in the growth and organization of the early church.

In 2 Thessalonians 1:3, Paul expresses his thankfulness for the faith and perseverance of the Thessalonian believers, indicating his close relationship with them and his role as their spiritual leader. This letter also contains teachings and exhortations for the Thessalonian Christians, encouraging them to stand firm in their faith and live in a manner worthy of the gospel.

Overall, evangelical Christians view Paul as a key figure in the spreading of the gospel and the establishment of the early Christian church, and they hold his writings, including 2 Thessalonians, in high regard as authoritative and inspired by God.