World Wide Study Bible
a Bible passage
28Now when these things begin to take place, stand up and raise your heads, because your redemption is drawing near.”
28. redemption—from the oppression of ecclesiastical despotism and legal bondage by the total subversion of the Jewish state and the firm establishment of the evangelical kingdom (Lu 21:31). But the words are of far wider and more precious import. Matthew (Mt 24:30) says, "And then shall appear the sign of the Son of man in heaven," evidently something distinct from Himself, mentioned immediately after. What this was intended to mean, interpreters are not agreed. But as before Christ came to destroy Jerusalem, some appalling portents were seen in the air, so before His personal appearing it is likely that something analogous will be witnessed, though of what nature it is vain to conjecture.