2 Corinthians 8:23:

Whether any do enquire of Titus, he is my partner and fellowhelper concerning you: or our brethren be enquired of, they are the messengers of the churches, and the glory of Christ.

See also:

Objection: “Faith Healers” Call Attention to Man and Thus Rob the Lord of Due Glory
Objection: The Choicest Saints on Earth Are Suffering Shut-Ins