1 Corinthians 16:20

All the brethren greet you
Either the brethren, the members of the church at Ephesus; or the apostle's brethren in the ministry, that were along with him, as Sosthenes and others; or the brethren that were come to him from Corinth, namely Stephanas, Fortunatus, and Achaicus:

greet ye one another with an holy kiss; (See Gill on Romans 16:16).