Romans 16:23
Gaius, my host, who is also the host of the whole Church, greets you. So do Erastus, the treasurer of the city, and Quartus our brother.
Acts 19:22
But he sent two of his assistants, Timothy and Erastus, to Macedonia, while he himself remained for a while in Roman Asia.
1 Corinthians 1:14
I thank God that I did not baptize any of you except Crispus and Gaius--
2 Timothy 4:20
Erastus stayed in Corinth; Trophimus I left behind me at Miletus, ill.
3 John 1:1-6
The Elder to his dear friend Gaius. Truly I love you.
Acts 19:29
The riot and uproar spread through the whole city, till at last with one accord they rushed into the Theatre, dragging with them Gaius and Aristarchus, two Macedonians who were fellow travellers with Paul.
Acts 20:4
He was accompanied as far as the province of Asia by Sopater the Beroean, the son of Pyrrhus; by the Thessalonians, Aristarchus and Secundus; by Gaius of Derbe, and Timothy; and by the Asians, Tychicus and Trophimus.