Mark 9:39

But Jesus said, Forbid him not: for there is no man who shall do a mighty work in my name, and 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 unto them, An enemy hath done this. And the servants say unto him, Wilt thou then that we go and gather them up?

Mark 10:13-14

And they were bringing unto him little children, that he should touch them: and the disciples rebuked them.

Acts 19:13-16

But certain also of the strolling Jews, exorcists, took upon them to name over them that had the evil spirits the name of the Lord Jesus, saying, I adjure you by Jesus whom Paul preacheth.

1 Corinthians 9:27

but I buffet my body, and bring it into bondage: lest by any means, after that I have preached to others, I myself should be rejected.

1 Corinthians 12:3

Wherefore I make known unto you, that no man speaking in the Spirit of God saith, Jesus is anathema; and no man can say, Jesus is Lord, but in the Holy Spirit.

1 Corinthians 13:1-2

If I speak with the tongues of men and of angels, but have not love, I am become sounding brass, or a clanging cymbal.

Philippians 1:18

What then? only that in every way, whether in pretence or in truth, Christ is proclaimed; and therein I rejoice, yea, and 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 were bringing unto him little children, that he should touch them: and the disciples rebuked them.
Matthew 13:28
And he said unto them, An enemy hath done this. And the servants say unto him, Wilt thou then that we go and gather them up?
Philippians 1:18
What then? only that in every way, whether in pretence or in truth, Christ is proclaimed; and therein I rejoice, yea, and 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 certain also of the strolling Jews, exorcists, took upon them to name over them that had the evil spirits the name of the Lord Jesus, saying, I adjure you by Jesus whom Paul preacheth.
1 Corinthians 9:27
but I buffet my body, and bring it into bondage: lest by any means, after that I have preached to others, I myself should be rejected.
1 Corinthians 13:1
If I speak with the tongues of men and of angels, but have not love, I am become sounding brass, or a clanging cymbal.

Lightly

1 Corinthians 12:3
Wherefore I make known unto you, that no man speaking in the Spirit of God saith, Jesus is anathema; and no man can say, Jesus is Lord, but in the Holy Spirit.

General references

2 Corinthians 13:8
For we can do nothing against the truth, but for the truth.

American Standard Version Public Domain