The only way I can see to square this, in the day the Son of man is revealed is not meaning in the day they are to flee. Keeping in mind that if 70 AD is meant, your view, it would be Christians that are to flee. If meaning the 2nd coming, it would be the unsaved that are to flee. Neither of these scenarios make any sense of Luke 17:31-33. Speaking of verse 33, try interpreting that in light of Matthew 16:24-26, for instance. IOW, it's the same concept. Yet it makes sense if we apply these things spiritually rather than literally, yet don't have it involving 70 AD nor the 2nd coming. Yet have it involving great tribulation. But not great tribulation allegedly involving 70 AD, but great tribulation involving the final days of this age involving the church being persecuted beyond reason.