Zechariah 9:9
“Rejoice greatly, O daughter of Zion! Shout, O daughter of Jerusalem! Behold, your King is coming to you; He is just and having salvation, Lowly and riding on a donkey, A colt, the foal of a donkey.”

You may recognize the fulfillment of this scripture as Jesus rode into Jerusalem the week of His crucifixion.
This prophet declares a king that offers salvation riding into Jerusalem. This is the Messiah, not riding high and mighty on a white horse but coming in humbly on a young donkey.

From Matt 21:1-9 – Now when they drew near Jerusalem, and came to Bethphage, at the Mount of Olives, then Jesus sent two disciples, saying to them, “Go into the village opposite you, and immediately you will find a donkey tied, and a colt with her. Loose them and bring them to Me. And if anyone says anything to you, you shall say, ‘The Lord has need of them,’ and immediately he will send them.”
All this was done that it might be fulfilled which was spoken by the prophet, saying: “Tell the daughter of Zion, ‘Behold, your King is coming to you, Lowly, and sitting on a donkey, A colt, the foal of a donkey.'”
So the disciples went and did as Jesus commanded them. They brought the donkey and the colt, laid their clothes on them, and set Him on them. And a very great multitude spread their clothes on the road; others cut down branches from the trees and spread them on the road. Then the multitudes who went before and those who followed cried out, saying: “Hosanna to the Son of David! ‘Blessed is He who comes in the name of the Lord!’ Hosanna in the highest!”

A few days later the same crowd shouted, “Crucify Him!”

You and I can see how Jesus fulfilled the prophecies about the Messiah. I guess the people living at the time just could not see it as we do.
It’s a real shame how so many people today still cannot see that He is the King and Messiah. He is the one that offers salvation.
Get ready, there a bit more for Him to fulfill – and He will!