2 Samuel 20:9-10

9And Joab said to Amasa, “Is it well with you, my brother?” And Joab took Amasa by the beard with his right hand ato kiss him. 10But Amasa did not observe the sword that was in Joab’s hand. bSo Joab struck him with it cin the stomach and spilled his entrails to the ground without striking a second blow, and he died.

Then Joab and Abishai his brother pursued Sheba the son of Bichri.

Psalms 55:20-21

20 My companion
Hebrew He
estretched out his hand against his friends;
he violated his covenant.
21His fspeech was gsmooth as butter,
yet war was in his heart;
his words were softer than oil,
yet they were hdrawn swords.

Proverbs 27:6

6Faithful are ithe wounds of a friend;
profuse are the kisses of an enemy.

Matthew 26:48-50

48Now the betrayer had given them a sign, saying, “The one I will kiss is the man; seize him.” 49And he came up to Jesus at once and said, “Greetings, jRabbi!” And he kissed him. 50Jesus said to him, kFriend, ldo what you came to do.”
Or  Friend, why are you here?
Then they came up and laid hands on Jesus and seized him.
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