Pontus
Pontus was a region located in the northeastern part of Asia Minor, along the southern coast of the Black Sea. It is mentioned in the New Testament in the context of the early Christian church. In Acts 2:9, Pontus is listed among the regions from which Jews had come to Jerusalem for Pentecost, indicating the presence of a Jewish community there. Additionally, Aquila, a Jewish Christian and tentmaker who worked alongside the Apostle Paul, was originally from Pontus (Acts 18:2). The region was known for its rugged terrain and was a part of the Roman province of Galatia during the New Testament period.

Galatia
Galatia was a region in central Asia Minor, inhabited by Celtic tribes known as the Galatians. The Apostle Paul visited Galatia during his missionary journeys and addressed one of his epistles to the churches there. The Epistle to the Galatians addresses issues of legalism and the Judaizers, emphasizing justification by faith in Jesus Christ rather than adherence to the Mosaic Law. Paul writes, "I am amazed how quickly you are deserting the One who called you by the grace of Christ and are turning to a different gospel" (Galatians 1:6). The Galatian churches were significant in the early spread of Christianity.

Cappadocia
Cappadocia was a large region in eastern Asia Minor, known for its unique geological formations and early Christian communities. It is mentioned in Acts 2:9 as one of the regions from which Jews traveled to Jerusalem for Pentecost. The Apostle Peter addresses believers in Cappadocia in his first epistle, referring to them as "elect exiles" (1 Peter 1:1). The region became an important center for early Christianity, with many Christians seeking refuge in its remote and rugged terrain during times of persecution.

Asia
In the New Testament, "Asia" refers to the Roman province of Asia, located in western Asia Minor. This region included several significant cities such as Ephesus, Smyrna, and Pergamum. The Apostle Paul spent considerable time in Ephesus, a major city in Asia, during his missionary journeys (Acts 19:1-10). The Book of Revelation addresses seven churches in Asia, highlighting the spiritual challenges and encouragements for these early Christian communities (Revelation 1:4). Asia was a vital area for the spread of the Gospel and the establishment of the early church.

Bithynia
Bithynia was a region in the northwestern part of Asia Minor, bordered by the Black Sea to the north. It is mentioned in the New Testament in the context of Paul's missionary journeys. In Acts 16:7, Paul and his companions were prevented by the Spirit from entering Bithynia, indicating divine guidance in their mission. The Apostle Peter also addresses believers in Bithynia in his first epistle, acknowledging their faith and perseverance (1 Peter 1:1). Bithynia, like the other regions mentioned, played a role in the early spread of Christianity and the establishment of the church.