Cross reference
Romans 16:23
23 Gaius mine host, and of the whole church, saluteth you. Erastus the chamberlain of the city saluteth you, and Quartus a brother.
Acts 19:22
22 So he sent into Macedonia two of them that ministered unto him, Timotheus and Erastus; but he himself stayed in Asia for a season.
1 Corinthians 1:14
14 I thank God that I baptized none of you, but Crispus and Gaius;
2 Timothy 4:20
20 Erastus abode at Corinth: but Trophimus have I left at Miletum sick.
3 John 1:1-6
1 The elder unto the wellbeloved Gaius, whom I love in the truth.
2 Beloved, I wish above all things that thou mayest prosper and be in health, even as thy soul prospereth.
3 For I rejoiced greatly, when the brethren came and testified of the truth that is in thee, even as thou walkest in the truth.
4 I have no greater joy than to hear that my children walk in truth.
5 Beloved, thou doest faithfully whatsoever thou doest to the brethren, and to strangers;
6 Which have borne witness of thy charity before the church: whom if thou bring forward on their journey after a godly sort, thou shalt do well:
Acts 19:29
29 And the whole city was filled with confusion: and having caught Gaius and Aristarchus, men of Macedonia, Paul's companions in travel, they rushed with one accord into the theatre.
Acts 20:4
4 And there accompanied him into Asia Sopater of Berea; and of the Thessalonians, Aristarchus and Secundus; and Gaius of Derbe, and Timotheus; and of Asia, Tychicus and Trophimus.