Luke 19:40

And He answered and said unto them, I tell you that, if these should hold their peace, the stones would immediately cry out.

As a snowball which begins to roll at the top of a mountain soon grows to a mighty avalanche, sweeping everything before it, so the enthusiasm that took hold of the disciples soon grew to a holy ecstasy, infecting also the bands of pilgrims that were going the same way and others that came out of the city to meet the procession. As Jesus continued on His way toward Jerusalem, they took their upper garments, their festival clothes, and spread them out on the road, as for the reception of a mighty king, an emperor. As He then reached the spot where the road doubles the brow of Mount Olivet, the excitement of the multitudes rose to its greatest height. The entire company of all the disciples broke forth into an exultant doxology, praising God for all the wonderful things that they had seen. They sang with a loud voice a section of the great Hallel, Psalms 118:26, with such additions as suited the occasion. They rendered all glory to the highest God for the rich manifestation of His grace in Christ the Redeemer. They sang His praises, because through the atonement of the Messiah the enmity between God and man had now been brought to an end. As on the great festivals, the multitudes could not restrain their joy, for the disciples were not alone in their enthusiastic outburst, but were ably seconded by the people. The joyous shout rose in a triumphant chorus, until the sides of the hills and the depths of the Kidron Valley resounded with the triumphant acclaim. And when some of the ubiquitous Pharisees began their usual grumbling, asking the Lord to rebuke and silence His disciples, they received poor comfort. For He told them that the very stones would burst forth in shouting if the disciples should hold their peace. The entire demonstration was arranged by God for the sake of His beloved Son. The Spirit of the Lord had taken hold of the pilgrims for a short while. God wanted to give His Son evidence and witness of the fact that the time was coming when all tongues would have to confess that Jesus is the Lord, though it was necessary for Him first to pass through the valley of His inexpressibly bitter Passion. Yet the work which He was to perform in Jerusalem was great and glorious and worthy of being praised by all creatures.