Cross reference
Mark 14:44
44 Now he who betrayed him had given them a sign, saying, "Whoever I will kiss, that is he. Seize him, and lead him away safely."
Exodus 12:13
13 The blood shall be to you for a token on the houses where you are: and when I see the blood, I will pass over you, and there shall no plague be on you to destroy you, when I strike the land of Egypt.
Philippians 1:28
28 and in nothing frightened by the adversaries, which is for them a proof of destruction, but to you of salvation, and that from God.
Acts 16:23
23 When they had laid many stripes on them, they threw them into prison, charging the jailer to keep them safely,
Matthew 26:48-50
48 Now he who betrayed him gave them a sign, saying, "Whoever I kiss, he is the one. Seize him."
49 Immediately he came to Jesus, and said, "Hail, Rabbi!" and kissed him.
50 Jesus said to him, "Friend, why are you here?" Then they came and laid hands on Jesus, and took him.
Proverbs 27:6
6 Faithful are the wounds of a friend; Although the kisses of an enemy are profuse.
Psalms 55:20-21
20 He raises his hands against his friends. He has violated his covenant.
21 His mouth was smooth as butter, But his heart was war. His words were softer than oil, Yet they were drawn swords.
2 Samuel 20:9-10
9 Joab said to Amasa, Is it well with you, my brother? Joab took Amasa by the beard with his right hand to kiss him.
10 But Amasa took no heed to the sword that was in Joab's hand: so he struck him therewith in the body, and shed out his bowels to the ground, and didn't strike him again; and he died. Joab and Abishai his brother pursued after Sheba the son of Bichri.
1 Samuel 23:22-23
22 Please go make yet more sure, and know and see his place where his haunt is, [and] who has seen him there; for it is told me that he deals very subtly.
23 See therefore, and take knowledge of all the lurking-places where he hides himself, and come you again to me of a certainty, and I will go with you: and it shall happen, if he be in the land, that I will search him out among all the thousands of Judah.
Joshua 2:12
12 Now therefore, please swear to me by Yahweh, since I have dealt kindly with you, that you also will deal kindly with my father's house, and give me a true token;
2 Thessalonians 3:17
17 The greeting of me, Paul, with my own hand, which is the sign in every letter: this is how I write.