Peter Pett's Commentary on the Bible
Mark 13:21-23
God's Concern For The Elect During and Following The Destruction of Jerusalem (13:21-23).
Jesus now reveals God's concern for His ‘elect' over this period, for some of them will be involved in the siege, and many will have to resist the machinations of false Messiahs, prophets and teachers. But they need not fear because for their sake He will shorten the days, and will keep them from being deceived.
Analysis.
a And unless the Lord had shortened the days no flesh would have been saved (Mark 13:20 a).
b “But for the elect's sake, whom He chose, He shortened the days” (Mark 13:20 b).
c “And then if any man will say to you, ‘Look, here is the Messiah', or ‘Look, there', do not believe it” (Mark 13:21).
b “For there will arise false Messiahs and false prophets and they will show signs and wonders so that they may lead astray, if possible, even the elect” (Mark 13:22).
a “But beware, see, I have told you all things beforehand” (Mark 13:23).
Note that in ‘a' things will be so bad that if the Lord had not shortened the days no flesh would be saved, and in the parallel they are therefore to beware, because He has told them beforehand. In ‘b' the days have been shortened for the elect's sake, and in the parallel there will be false Messiahs and prophets demonstrating such wonders that if it were possible even the elect might be deceived. The assumption is, of course, that it is not possible. Centrally in ‘c' they are not to believe anyone who suggests that the Messiah is on earth.
“And then if any man will say to you, ‘Look, here is the Messiah', or ‘Look, there', do not believe it. For there will arise false Messiahs and false prophets and they will show signs and wonders so that they may lead astray, if possible, even the elect. But beware, see, I have told you all things beforehand.”
The warning now was that during and after the destruction of Jerusalem and the Temple there would arise false claimants to religious status, whether as Messiahs or prophets. It must be seen as quite possible that some of the fanatical leaders in Jerusalem at the time of the siege, or their followers, did indicate their Messianic status. They certainly feigned ‘kingship', And history has later been full of such. This was inevitable. The vacuum left by the end of the Temple and the aspirations of the Jews, once they were over the first disaster, could be expected to result in such activity, while the world is always looking for some superman to fulfil its own aspirations.
The most obvious from the Jewish point of view was Barcochba who raised a rebellion against the Romans and specifically claimed to be the Messiah in 132 AD. Others did not raise the same public interest, but there would no doubt have been many. (We must remember that we actually know very little of the detailed general history of that time, and indeed of much of the time since, for the sources are few and limited. History is written by the few books and monuments that survive as well as by the victors). And they had to be warned against, for they would lead many astray. History reveals how false prophets did continually disturb the Christian church right from the beginning and John had to warn against many antichrists (1 John 2:18).
‘They will show signs and wonders.' Just as the Egyptian magicians did in the time of Moses (Exodus 7:11; Exodus 7:22). Magic and trickery have ever been a source of signs and wonders and by them many have been deceived. Compare Revelation 13:13 of the activities of Roman priests on behalf of the Emperor. And some do at times seem to have mysterious gifts of healing which can be wisely used or can be exploited. By this means the false Messiahs reveal their falsehood, and they will be the sign of Antichrist (2 Thessalonians 2:9) whoever he may be. The word means someone who sets himself up as a rival to Christ. The true Messiah did not use such means to vindicate His claims. It is interesting that John did not consider that Antichrist need be just one person but was an idea that could be fulfilled by the many. Antichrist was a symbolic representation rather than one person (1 John 2:18).
‘Deceive -- the elect.' They would be so deceptive that if it had been possible they might even have deceived God's chosen. But fortunately that is not permanently possible.
‘The elect.' The defining verses for this description are Luke 18:7; John 6:37; John 6:39; John 10:26; John 10:29; John 17:6; John 17:9; John 17:24. It is those who cry to God constantly, those whose prayer and action reveal their love and trust in Him, and those who are given to Him by the Father and therefore believe in Him.
‘But beware, see, I have told you all things beforehand.' The ‘you' is emphasised. The disciples are to be the guides of the new movement.