John constantly repeated the phrase, “Little children,
love one another!” He did that because he believed it
was the Lord’s most important commandment.

Three Witnesses              

1 John 5:8
“And there are three that bear witness in earth, the Spirit, and the water, and the blood: and these three agree in one.”

 

Matthew 18:16
“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.”

 

Deuteronomy 19:15
“A single witness shall not rise up against a man on account of any iniquity or any sin which he has committed; on the evidence of two or three witnesses a matter shall be confirmed.”