will come - as in Luk 19:43, when, amidst calamities, etc., you will anxiously look for a deliverer, and deceivers will put themselves forward in this character.
one of the days of the Son of man - Himself again among them but for one day; as we say when all seems to be going wrong and the one person who could keep them right is removed [Neander in Stier, etc.]. “This is said to guard against the mistake of supposing that His visible presence would accompany the manifestation and establishment of His kingdom” [Webster and Wilkinson].