Whether any do inquire of Titus, he is my partner and fellowhelper concerning you: or our brethren be inquired of, they are the messengers of the churches, and the glory of Christ.
Fellow-helper concerning you - Greek, 'fellow-worker toward you.'
Our brethren - the two (2 Corinthians 8:18; 2 Corinthians 8:22).
Messengers - rather, as Greek, 'apostles:' in the less strict sense (Acts 14:14).
Of the churches - sent by the churches, as we are by the Lord [Philippians 2:25, apostoloon (G652)]. There was in the synagogue an officer, "the angel of the church," whence the title seems derived (cf. Revelation 2:1).
The glory of Christ. Christ's glory is represented by them; so that whatever treatment ye give them, ye really give Him (1 Corinthians 2:7; Matthew 25:40).