there will come a time when even the very elect will be deceived.....
Mat_24:24 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.
That’s not what the Bible teaches. You changed the meaning of the verse. You can’t forget “if it 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.” (Matthew 24:24)
The elect are not fooled, or they aren’t fooled for long, by popes and other false Christs. In John 10, Christ said, “But ye believe not, because ye are not of my sheep, as I said unto you. My sheep hear my voice, and I know them, and they follow me.”
His sheep hear His voice and they follow Him, not false Christs, not popes.