And the disciples went, and did as Jesus commanded them, And brought the ass, and the colt, and put on them their clothes, and they set Him thereon. And a very great multitude spread their garments in the way; others cut down branches from the trees, and strawed them in the way. – Matthew 21:6-8

It is well when disciples are not only willing to fetch another man’s colt but are willing to lay their own garments thereon; when they will not only gather palm fronds to strew the path but will take off their own coats to carpet the way of the King. When everybody does something, or gives something, or at any rate joins in the hearty Hosannas, then is the King come into our midst. Our King is not where hearts are miserly, and souls are selfish; but one token of His presence is that His people offer willingly unto the Lord. At such times believers feel that they are not their own but are bought with a price; and things which once looked like sacrifices too great to be expected of them, are cheerfully presented as sacrifices of joy.

Beloved, we must not forget that it is a token of God’s having come to His church and of His having given her a joyful day, when the children share in it…When God moves the children to earnestness, He will soon move their fathers and mothers. When boys and girls meet to praise God, do not despise their little meetings, nor say, “It is only a parcel of children.” The children are in God’s esteem the most precious portion of the race. He sets high store by His little ones, and He has set a special curse upon those who offend one of the little ones that believe in Him. Jesus, Master, come, we pray Thee! Come in Thy lowly pomp, in all Thy gentleness, and grace, and then will the children of these modern days sing loud Hosannas to Thy name, like those in Thy temple of old. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2196.cfm