10.  But who is this that cometh down?  He says in what follows, And with the sun He endureth, and before the moon generations of generations Ps. lxxii. 5..  And again another of the Prophets saith, Rejoice greatly, O daughter of Sion, shout, O daughter of Jerusalem.  Behold! thy King cometh unto thee, just and having salvation Zech. ix. 9..  Kings are many; of which speakest thou, O Prophet?  Give us a sign which other Kings have not.  If thou say, A king clad in purple, the dignity of the apparel has been anticipated.  If thou say, Guarded by spear-men, and sitting in a golden chariot, this also has been anticipated by others.  Give us a sign peculiar to the King whose coming thou announcest.  And the Prophet maketh answer and saith, Behold! thy King cometh unto thee, just, and having salvation:  He is meek, and riding upon an ass and a young foal, not on a chariot.  Thou hast a unique sign of the King who came.  Jesus alone of kings sat upon an unyoked ἀσαγῆ, a rare word, formed from σάγη, “harness.” foal, entering into Jerusalem with acclamations as a king.  And when this King is come, what doth He?  Thou also by the blood of the covenant hast sent forth thy prisoners out of the pit wherein is no water Zech. ix. 11..