3 John 9

I wrote unto the church. Of which Gaius was a member. The letter referred to is not extant.

But Diotrephes. This man is not elsewhere named. He was evidently an ambitious and unscrupulous church official, who

Receiveth us not, that is, rebelled against the apostle's authority, and who refused to heed the letter. The letter may have been sent by those whom Gaius entertained.
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