Mark 14:44

Now the one who was betraying him had given them a sign, saying, "[The one] whom I kiss--he is [the one]. Arrest him and lead [him] away under guard!"

Exodus 12:13

And the blood will be a sign for you on the houses where you are, and I will see the blood, and I will pass over you, and there will not be a destructive plague among you when I strike the land of Egypt.

Joshua 2:12

So then please swear to me by Yahweh, because {I have shown loyalty to you}, and {you will also show loyalty} {to my family}. You must give me a sign of good faith,

1 Samuel 23:22-23

Go, please, make certain again! Find out and see {exactly where he is} and who has seen him there! For they have said to me, 'He [is] very cunning.'

2 Samuel 20:9-10

Then Joab said to Amasa, "Is it peace, O you my brother?" Then the right hand of Joab took hold of the beard of Amasa [as if] to kiss him.

Psalm 55:20-21

He has put forth his hands against {his friends}; he has defiled his covenant.

Proverbs 27:6

The wounds of a friend mean well, but the kisses of an enemy are profane.

Matthew 26:48-50

Now the one who was betraying him had given them a sign, saying, "[The one] whom I kiss--he is [the one]. Arrest him!"

Acts 16:23

And [after they] had inflicted many blows on them, they threw [them] into prison, giving orders to the jailer to guard them securely.

Philippians 1:28

and not letting yourselves be intimidated in anything by your opponents, which is a sign of destruction to them, but of your salvation, and this from God,

2 Thessalonians 3:17

The greeting [is] by my hand, Paul's, which is {a sign of genuineness} in every letter: {this is how I write}.

Treasury of Scripture Knowledge

Summary

And he that betrayed him had given them a token, saying, Whomsoever I shall kiss, that same is he; take him, and lead him away safely.

Bible References

A token

Exodus 12:13
And the blood will be a sign for you on the houses where you are, and I will see the blood, and I will pass over you, and there will not be a destructive plague among you when I strike the land of Egypt.
Joshua 2:12
So then please swear to me by Yahweh, because {I have shown loyalty to you}, and {you will also show loyalty} {to my family}. You must give me a sign of good faith,
Philippians 1:28
and not letting yourselves be intimidated in anything by your opponents, which is a sign of destruction to them, but of your salvation, and this from God,
2 Thessalonians 3:17
The greeting [is] by my hand, Paul's, which is {a sign of genuineness} in every letter: {this is how I write}.

Whomsoever

2 Samuel 20:9
Then Joab said to Amasa, "Is it peace, O you my brother?" Then the right hand of Joab took hold of the beard of Amasa [as if] to kiss him.
Psalm 55:20
He has put forth his hands against {his friends}; he has defiled his covenant.
Proverbs 27:6
The wounds of a friend mean well, but the kisses of an enemy are profane.
Matthew 26:48
Now the one who was betraying him had given them a sign, saying, "[The one] whom I kiss--he is [the one]. Arrest him!"

And lead

1 Samuel 23:22
Go, please, make certain again! Find out and see {exactly where he is} and who has seen him there! For they have said to me, 'He [is] very cunning.'
Acts 16:23
And [after they] had inflicted many blows on them, they threw [them] into prison, giving orders to the jailer to guard them securely.