Rejoice greatly daughter of Zion!  Shout in triumph daughter of Jerusalem!  Your king is coming to you.  He is just and endowed with salvation, humble and mounted on a donkey, even on a colt, the foal of a donkey.

Zechariah 9:9  written 520 b.c.

As they approached Jerusalem and came to Bethphage on the Mount of Olives, Jesus sent two disciples, saying to them, "Go to the village ahead of you and at once you will find a donkey tied there with her colt by her.  Untie them and bring them to me.  If anyone says anything to you, tell him that the Lord needs them and he will return them right away."  The disciples went and did as Jesus had instructed them.  They brought the donkey and the colt, placed their cloaks on them and Jesus sat on them.  A very large crowd spread their cloaks on the road while others cut branches from the trees and spread them on the road.  The crowds that went ahead of him and those that followed shouted, "Hosanna to the Son of David!  Blessed is he who comes in the name of the Lord! Hosanna in the highest!"  Matthew 21:1-9