Mark 9:39

But Jesus said, Say not so: for there is no man who will do a great work in my name, and be able at the same time to say evil of me.

Matthew 7:22-23

A great number will say to me on that day, Lord, Lord, were we not prophets in your name, and did we not by your name send out evil spirits, and by your name do works of power?

Matthew 13:28-29

And he said, Someone has done this in hate. And the servants say to him, Is it your pleasure that we go and take them up?

Mark 10:13-14

And they took to him little children, so that he might put his hands on them: and the disciples said sharp words to them.

Acts 19:13-16

But some of the Jews who went from place to place driving out evil spirits, took it on themselves to make use of the name of the Lord Jesus over those who had evil spirits, saying, I give you orders, by Jesus, whom Paul is preaching.

1 Corinthians 9:27

But I give blows to my body, and keep it under control, for fear that, after having given the good news to others, I myself might not have God's approval.

1 Corinthians 12:3

So it is my desire for you to be clear about this; that no one is able to say by the Spirit of God that Jesus is cursed; and no one is able to say that Jesus is Lord, but by the Holy Spirit.

1 Corinthians 13:1-2

If I make use of the tongues of men and of angels, and have not love, I am like sounding brass, or a loud-tongued bell.

Philippians 1:18

What then? only that in every way, falsely or truly, the preaching of Christ goes on; and in this I am glad, and will be glad.

Treasury of Scripture Knowledge

Summary

But Jesus said, Forbid him not: for there is no man which shall do a miracle in my name, that can lightly speak evil of me.

General references

Bible References

Forbid

Mark 10:13
And they took to him little children, so that he might put his hands on them: and the disciples said sharp words to them.
Matthew 13:28
And he said, Someone has done this in hate. And the servants say to him, Is it your pleasure that we go and take them up?
Philippians 1:18
What then? only that in every way, falsely or truly, the preaching of Christ goes on; and in this I am glad, and will be glad.

There

Matthew 7:22
A great number will say to me on that day, Lord, Lord, were we not prophets in your name, and did we not by your name send out evil spirits, and by your name do works of power?
Acts 19:13
But some of the Jews who went from place to place driving out evil spirits, took it on themselves to make use of the name of the Lord Jesus over those who had evil spirits, saying, I give you orders, by Jesus, whom Paul is preaching.
1 Corinthians 9:27
But I give blows to my body, and keep it under control, for fear that, after having given the good news to others, I myself might not have God's approval.
1 Corinthians 13:1
If I make use of the tongues of men and of angels, and have not love, I am like sounding brass, or a loud-tongued bell.

Lightly

1 Corinthians 12:3
So it is my desire for you to be clear about this; that no one is able to say by the Spirit of God that Jesus is cursed; and no one is able to say that Jesus is Lord, but by the Holy Spirit.

General references

2 Corinthians 13:8
Because we are able to do nothing against what is true, but only for it.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain