For false Christs and false prophets will appear and perform great signs and wonders to deceive even the elect, if that were possible.
KJV
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.
ASV
For there shall arise false Christs, and false prophets, and shall show great signs and wonders; so as to lead astray, if possible, even the elect.