Mark 13:21

Then if anyone tells you, 'Look, here is the Christ!' or, 'Look, there!' don't believe it.

Luke 21:8

He said, "Watch out that you don't get led astray, for many will come in my name, saying, 'I am he,' and, 'The time is at hand.' Therefore don't follow them.

Deuteronomy 13:1-3

If there arise in the midst of you a prophet, or a dreamer of dreams, and he give you a sign or a wonder,

Matthew 24:5

For many will come in my name, saying, 'I am the Christ,' and will lead many astray.

Matthew 24:23-25

"Then if any man tells you, 'Behold, here is the Christ,' or, 'There,' don't believe it.

Luke 17:23-24

They will tell you, 'Look, here!' or 'Look, there!' Don't go away, nor follow after them,

John 5:43

I have come in my Father's name, and you don't receive me. If another comes in his own name, you will receive him.

Treasury of Scripture Knowledge

Summary

And then if any man shall say to you, Lo, here is Christ; or, lo, he is there; believe him not:

Bible References

General references

Deuteronomy 13:1
If there arise in the midst of you a prophet, or a dreamer of dreams, and he give you a sign or a wonder,
Matthew 24:5
For many will come in my name, saying, 'I am the Christ,' and will lead many astray.
Luke 17:23
They will tell you, 'Look, here!' or 'Look, there!' Don't go away, nor follow after them,
Luke 21:8
He said, "Watch out that you don't get led astray, for many will come in my name, saying, 'I am he,' and, 'The time is at hand.' Therefore don't follow them.
John 5:43
I have come in my Father's name, and you don't receive me. If another comes in his own name, you will receive him.