Mark 9:39

But Jesus said, Forbid him not, for there is no man who will do a mighty work in my name, and will be able quickly to speak evil of me.

Matthew 7:22-23

Many will say to me in that day, Lord, Lord, did we not prophesy by thy name, and by thy name cast out demons, and by thy name do many mighty works?

Matthew 13:28-29

And he said to them, A hostile man did this. And the bondmen said to him, Do thou desire therefore, after going, we would gather them up?

Mark 10:13-14

And they brought children to him, so that he would touch them. And the disciples rebuked those who were bringing them.

Acts 19:13-16

But some of the wandering Jewish exorcists, attempted to name the name of the Lord Jesus over those who had the evil spirits, saying, We adjure you by Jesus whom Paul proclaims.

1 Corinthians 9:27

But I give my body a black eye and subdue it, lest somehow having preached to others, I myself might become disqualified.

1 Corinthians 12:3

Therefore I make known to you, that no man speaking by the Spirit of God says, Jesus is accursed, and no man can say, Jesus is Lord, except by Holy Spirit.

1 Corinthians 13:1-2

If I speak with the tongues of men and of heavenly agents, but have not love, I have become sounding brass, or a clashing cymbal.

Philippians 1:18

What then? Except in every way, whether in pretence or in truth, Christ is proclaimed, and in this I rejoice, but also I will rejoice.

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 brought children to him, so that he would touch them. And the disciples rebuked those who were bringing them.
Matthew 13:28
And he said to them, A hostile man did this. And the bondmen said to him, Do thou desire therefore, after going, we would gather them up?
Philippians 1:18
What then? Except in every way, whether in pretence or in truth, Christ is proclaimed, and in this I rejoice, but also I will rejoice.

There

Matthew 7:22
Many will say to me in that day, Lord, Lord, did we not prophesy by thy name, and by thy name cast out demons, and by thy name do many mighty works?
Acts 19:13
But some of the wandering Jewish exorcists, attempted to name the name of the Lord Jesus over those who had the evil spirits, saying, We adjure you by Jesus whom Paul proclaims.
1 Corinthians 9:27
But I give my body a black eye and subdue it, lest somehow having preached to others, I myself might become disqualified.
1 Corinthians 13:1
If I speak with the tongues of men and of heavenly agents, but have not love, I have become sounding brass, or a clashing cymbal.

Lightly

1 Corinthians 12:3
Therefore I make known to you, that no man speaking by the Spirit of God says, Jesus is accursed, and no man can say, Jesus is Lord, except by Holy Spirit.

General references

2 Corinthians 13:8
For we do not have any power against the truth, but for the truth.