1 Timothy 5:19

“On the mouth of two witnesses or three witnesses, he who is to die shall be put to death; he shall not be put to death on the mouth of one witness.

“A single witness shall not rise up against a man on account of any iniquity or any sin which he has committed; at the mouth of two or three witnesses a matter shall be established.

“But if he does not listen to you, take one or two more with you, so that by the mouth of two or three witnesses every fact may be confirmed.

And this they did, sending it in charge of Barnabas and Saul to the elders.

The elders who lead well are to be considered worthy of double honor, especially those who labor at preaching the word and teaching.