In the New Testament, the practice of sending greetings from fellow workers is a recurring theme, reflecting the communal and interconnected nature of the early Christian church. These greetings serve not only as personal acknowledgments but also as affirmations of unity and shared mission among believers.

Romans 16:21-23
In Paul's letter to the Romans, he includes greetings from several of his companions: "Timothy, my fellow worker, sends you greetings, as do Lucius, Jason, and Sosipater, my kinsmen" (Romans 16:21). Paul further extends greetings from Tertius, who penned the letter, Gaius, who hosted Paul and the church, and Erastus, the city treasurer, along with Quartus, a brother (Romans 16:22-23). This passage highlights the diverse backgrounds of early Christians and their collaborative efforts in spreading the Gospel.

1 Corinthians 16:19-20
In his first letter to the Corinthians, Paul conveys greetings from the churches in Asia, specifically mentioning Aquila and Priscilla: "The churches in the province of Asia send you greetings. Aquila and Priscilla greet you warmly in the Lord, as does the church that meets at their house" (1 Corinthians 16:19). This indicates the practice of house churches and the hospitality extended by fellow believers, which was crucial for the growth of the early church.

Colossians 4:10-14
Paul's letter to the Colossians includes a series of greetings from his companions: "Aristarchus, my fellow prisoner, sends you greetings, as does Mark, the cousin of Barnabas... Jesus, who is called Justus, also sends greetings" (Colossians 4:10-11). Paul also mentions Epaphras, Luke, and Demas, emphasizing their roles in the ministry and their support for the Colossian church (Colossians 4:12-14). These greetings underscore the importance of collaboration and mutual encouragement among early Christians.

Philippians 4:21-22
In his letter to the Philippians, Paul writes, "Greet all the saints in Christ Jesus. The brothers who are with me send you greetings. All the saints send you greetings, especially those from the household of Caesar" (Philippians 4:21-22). This passage highlights the reach of the Gospel, even into the household of Caesar, and the solidarity among believers across different social strata.

2 Timothy 4:19-21
Paul's second letter to Timothy includes personal greetings to individuals such as Prisca and Aquila, and the household of Onesiphorus (2 Timothy 4:19). He also mentions Erastus and Trophimus, providing insight into the network of relationships that supported his ministry (2 Timothy 4:20-21).

Philemon 1:23-24
In the brief letter to Philemon, Paul sends greetings from Epaphras, Mark, Aristarchus, Demas, and Luke, referring to them as "my fellow workers" (Philemon 1:23-24). This reflects the close-knit community of believers who labored together for the cause of Christ.

The greetings from fellow workers in the New Testament illustrate the interconnectedness of the early church and the shared commitment to the Gospel. These expressions of fellowship and mutual support were vital for the encouragement and perseverance of believers in a challenging and often hostile environment.