Rejoice greatly, O daughter of Zion; shout, O daughter of Jerusalem: behold, thy King cometh unto thee: he is just, and having salvation; lowly, and riding upon an ass, and upon a colt the foal of an ass. (Zechariah 9:9)
And they brought him to Jesus: and they cast their garments upon the colt, and they set Jesus thereon. And as he went, they spread their clothes in the way. And when he was come nigh, even now at the descent of the mount of Olives, the whole multitude of the disciples began to rejoice and praise God with a loud voice for all the mighty works that they had seen; Saying, Blessed be the King that cometh in the name of the Lord: peace in heaven, and glory in the highest. (Luke 19:35-38)
Christ was following the Jewish custom for a royal entry. The animal on which He rode was that ridden by the kings of Israel, and prophecy had foretold that thus the Messiah should come to His kingdom. No sooner was He seated upon the colt than a loud shout of triumph rent the air. The multitude hailed Him as Messiah, their King. Jesus now accepted the homage which He had never before permitted, and the disciples received this as proof that their glad hopes were to be realized by seeing Him established on the throne.
The multitude were convinced that the hour of their emancipation was at hand. In imagination they saw the Roman armies driven from Jerusalem, and Israel once more an independent nation. All were happy and excited; the people vied with one another in paying Him homage. They could not display outward pomp and splendor, but they gave Him the worship of happy hearts. They were unable to present Him with costly gifts, but they spread their outer garments as a carpet in His path, and they also strewed the leafy branches of the olive and the palm in the way. They could lead the triumphal procession with no royal standards, but they cut down the spreading palm boughs, Nature's emblem of victory, and waved them aloft with loud acclamations and hosannas.