Who else sent greetings?...

Gaius, in whose home Paul was staying.

The whole group of Christians in Corinth.

Erastus, apparently a man of high position, the director of public works of Corinth, one of the largest, wealthiest cities of the Roman Empire.

Quartus, a believer who wished to be remembered to the saints in Rome.

Paul’s love for the believers, Jews and Gentiles alike, is revealed by the number of individuals whom he addresses by name in his Epistles. A true Christian church is made up of a group of people, often quite small in number, who have fervent love for the Lord Jesus Christ and for each other.