Mark 13:21-23

Then if anyone says to you, ‘Look, here is the Christ (the Messiah, the Anointed)!’ or, ‘Look, He is there!’ do not believe it; for false Christs and false prophets will arise, and they will provide signs and wonders in order to deceive, if [such a thing were] possible, even the elect [those God has chosen for Himself]. But be on your guard; I have told you everything in advance.