*The words “do that” are not in the Greek text but are implied
iThe meaning of this phrase is disputed: (1) some take it as a declarative (as in the translation); (2) others understand it as some form of a question, often with supplied words: (a) “Friend, are you misusing the kiss for that purpose for which you are here?” (b) “Friend, in connection with that for which you have appeared do you kiss me?” (c) “Friend, are you here for this purpose?” (d) “Friend, what are you here for?”; this last option, though often suggested, is doubtful because of lack of evidence for the relative pronoun used as an interrogative in direct questions
*Here “and” is supplied because the previous participle (“came up”) has been translated as a finite verb

In other versions

Jesus said to him, “Friend, do what you came to do.” Then they came up and laid hands on Jesus and seized him.

Jesus replied, “Do what you came for, friend.”

Then the men stepped forward, seized Jesus and arrested him.

“Friend,” Jesus asked him, “why have you come?”

Then they came up, took hold of Jesus, and arrested him.

Jesus said, “My friend, go ahead and do what you have come for.”

Then the others grabbed Jesus and arrested him.

And Jesus said unto him, Friend, wherefore art thou come? Then came they, and laid hands on Jesus, and took him.

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