Romans 16:23
Gaius my host, and of the whole church, saluteth you. Erastus the treasurer of the city saluteth you, and Quartus the brother.
Acts 19:22
And having sent into Macedonia two of them that ministered unto him, Timothy and Erastus, he himself stayed in Asia for a while.
1 Corinthians 1:14
I thank God that I baptized none of you, save Crispus and Gaius;
2 Timothy 4:20
Erastus remained at Corinth: but Trophimus I left at Miletus sick.
3 John 1:1-6
The elder unto Gaius the beloved, whom I love in truth.
Acts 19:29
And the city was filled with the confusion: and they rushed with one accord into the theatre, having seized Gaius and Aristarchus, men of Macedonia, Paul's companions in travel.
Acts 20:4
And there accompanied him as far as Asia, Sopater of Beroea, the son of Pyrrhus; and of the Thessalonians, Aristarchus and Secundus; and Gaius of Derbe, and Timothy; and of Asia, Tychicus and Trophimus.