St. Zechariah the Prophet Foresees a Humble King Riding a Colt

St. Zechariah the Prophet
Exult greatly, O daughter Zion!
Shout for joy, O daughter Jerusalem!
Behold: your king is coming to you,
a just savior is he,
Humble, and riding on a donkey,
on a colt, the foal of a donkey.   
Zechariah 9:9

Jesus sent two disciples, saying to them, "Go into the village opposite you, and immediately you will find an ass tethered, and a colt with her.  Untie them and bring them here to me.  This happened so that what had been spoken through the prophet might be fulfilled:

"Say to daughter Zion,
'Behold, your king comes to you,
meek and riding on an ass,
and on a colt, the foal of a beast of burden.'"   
Matthew 21:1b-2, 4-5