One of the believers who accompanied Paul in his trip to collect and deliver the offering for the Jerusalem church (Acts 20:4). Since he is often mentioned with Trophimus of Ephesus, Tychicus was likely also a native of that city.
Tychicus delivered Paul’s letter to Ephesus (Ephesians 6:21) as well as Paul’s letters to Philemon and the Colossians (Colossians 4:7). Most believe that he was also one of the two Christians (with Trophimus) who accompanied Titus in the delivery of 2 Corinthians (2 Corinthians 8:16–24).
Paul mentioned Tychicus twice in his later letters, first sending him to Crete to be with Titus (Titus 3:12). Later he mentioned to Timothy that he had sent Tychicus to Ephesus (2 Timothy 4:12). Evidently, Tychicus and Paul were close friends as well as coworkers, since Paul frequently referred to Tychicus as a “beloved brother.”