Mark 13:21

"And at that time if anyone should say to you, "Behold, here [is] the Christ,' 'Behold, there [he is],' do not believe [him]!

Luke 21:8

And he said, Watch out that you are not deceived! For many will come in my name, saying, 'I am [he],' and 'The time is near!' Do not go after them!

Deuteronomy 13:1-3

"If a prophet stands up in your midst or a dreamer of dreams and he gives to you a sign or wonder,

Matthew 24:5

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

Matthew 24:23-25

"At that time if anyone should say to you, 'Behold, here [is] the Christ,' or 'Here [he is],' do not believe [him]!

Luke 17:23-24

And they will say to you, 'Behold, there!' 'Behold, here!' Do not go out or run after [them]!

John 5:43

I have come in my Father's name, and you do not accept me. If another should come in his own name, you would accept that one!

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 a prophet stands up in your midst or a dreamer of dreams and he gives to you a sign or wonder,
Matthew 24:5
For many will come in my name, saying, 'I am the Christ,' and they will deceive many.
Luke 17:23
And they will say to you, 'Behold, there!' 'Behold, here!' Do not go out or run after [them]!
Luke 21:8
And he said, Watch out that you are not deceived! For many will come in my name, saying, 'I am [he],' and 'The time is near!' Do not go after them!
John 5:43
I have come in my Father's name, and you do not accept me. If another should come in his own name, you would accept that one!