“On that day,

Many will say to me.

‘Lord!

Lord!

Did we not prophesy

In your name?

Did we not cast out demons

In your name?

Did we not do many marvelous works

In your name?’

Then I will declare

To them.

‘I never knew you!

Go away from me!

You evildoers!’”

πολλοὶ ἐροῦσίν μοι ἐν ἐκείνῃ τῇ ἡμέρᾳ Κύριε, οὐ τῷ σῷ ὀνόματι ἐπροφητεύσαμεν, καὶ τῷ σῷ ὀνόματι δαιμόνια ἐξεβάλομεν, καὶ τῷ σῷ ὀνόματι δυνάμεις πολλὰς ἐποιήσαμεν;

καὶ τότε ὁμολογήσω αὐτοῖς ὅτι Οὐδέποτε ἔγνων ὑμᾶς· ἀποχωρεῖτε ἀπ’ ἐμοῦ οἱ ἐργαζόμενοι τὴν ἀνομίαν

This verse is somewhat similar to Luke, chapter 13:26-27.  Matthew has Jesus say that on that day (ἐν ἐκείνῃ τῇ ἡμέρᾳ), the judgment day, many would say to him (πολλοὶ ἐροῦσίν μοι), Lord! Lord (Κύριε Κύριε)!  Did we not prophesize in your name (οὐ τῷ σῷ ὀνόματι ἐπροφητεύσαμεν)?  Did we not cast out demons in your name (καὶ τῷ σῷ ὀνόματι δαιμόνια ἐξεβάλομεν)?  Did we not do many great marvelous works in your name (καὶ τῷ σῷ ὀνόματι δυνάμεις πολλὰς ἐποιήσαμεν)?  Then Jesus was going to declare to them (καὶ τότε ὁμολογήσω αὐτοῖς) that he never knew them (καὶ τότε ὁμολογήσω αὐτοῖς), because they were evildoers.  Just as David had told the evildoers to depart in Psalm 6:13, Jesus wanted these evildoers (οἱ ἐργαζόμενοι τὴν ἀνομίαν) to leave him alone (ἀποχωρεῖτε ἀπ’ ἐμοῦ).  Who are these evil doers?  They seem like disciples of Jesus, since they prophesized, cast out demons, and did marvelous works in the name of Jesus.  What evil had they done to make them unworthy on the final judgment day?  This text is not clear.