Mark 13:21
“And then if any man shall say to you, Lo, here is Christ; or, lo, he is there; believe him not:”
For in those days shall be affliction, such as was not from the beginning of the creation which God created unto this time, neither shall be.
And except that the Lord had shortened those days, no flesh should be saved: but for the elect’s sake, whom he hath chosen, he hath shortened the days.
And then if any man shall say to you, Lo, here is Christ; or, lo, he is there; believe him not:
For false Christs and false prophets shall rise, and shall shew signs and wonders, to seduce, if it were possible, even the elect.
But take ye heed: behold, I have foretold you all things.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“Neither shall they say, Lo here! or, lo there! for, behold, the kingdom of God is within you.”
“Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.”
“Then if any man shall say unto you, Lo, here is Christ, or there; believe it not.”
“And he said, Take heed that ye be not deceived: for many shall come in my name, saying, I am Christ; and the time draweth near: go ye not therefore after them.”
“Little children, it is the last time: and as ye have heard that antichrist shall come, even now are there many antichrists; whereby we know that it is the last time.”