Mark 13:22

"For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect."

"For many shall come in my name, saying, I am Christ; and shall deceive many."

"Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves."

"These things have I written unto you concerning them that seduce you."

"Then said Jesus unto him, Except ye see signs and wonders, ye will not believe."

"They went out from us, but they were not of us; for if they had been of us, they would no doubt have continued with us: but they went out, that they might be made manifest that they were not all of us."

"The beast that thou sawest was, and is not; and shall ascend out of the bottomless pit, and go into perdition: and they that dwell on the earth shall wonder, whose names were not written in the book of life from the foundation of the world, when they behold the beast that was, and is not, and yet is."