…and they that followed, cried, saying, Hosanna; Blessed is He that cometh in the name of the Lord…Hosanna in the highest. – Mark 11:9,10

I want you to notice in our text, that our Savior was received with the shout of Hosanna! The best interpretation I can give is-“Save, oh, save! Save, oh, save!” Different nations have different ways of expressing their good will to their monarchs. A Roman would have shouted, “Io triumphe!” We sing, “God save our gracious Queen.” The Persians said, “O King, live for ever.” The Jews cried, “Hosanna!” “Save,” or, “God save the King!” The French have their “Vivas,” by which they mean, “Long live the man.” Hosanna is tantamount to all these. It is a shout of homage, welcome, and loyalty. It wishes wealth, health, and honor to the king. In the Saxon we say, “Hurrah”; in Hebrew, “Hosanna.” That mighty shout startled all the streets of the old city: “Hosanna, Hosanna, the King is come. Save Him, O Lord! Save us through Him! Long live the King!” While it was a shout of homage, it was also a prayer to the King. “Save, Lord; save us, O King! O King, born to conquer and to save, deliver us!” It was, moreover, a prayer for Him-“God save the King, God bless and prosper His majesty.” Prayer also shall be made for Him continually; and daily shall He be praised.” We never cease to pray, “Thy kingdom come; Thy will be done in earth, as it is in heaven.” Let us then cry, Hosanna, making it at once a loyal shout; a prayer to our King, and a prayer for Him. All these things appear in the benediction which follows: “Blessed is He that cometh in the name of the Lord; Hosanna in the highest.”

Would it be amiss if we were to indulge in a hearty shout for our King? May we never grow enthusiastic? May we never overleap the bounds of prim propriety? Shall we never cry Hallelujah! Shall no Hosannas burst from our lips? Surely, if our King will come into the midst of His church again, and end these black days of doubt, we must and will shout, or else the very stones will cry out, Yes, O Lord Jesus, Thou shalt have our Vivas: we will shout, “Long live the King! ~ C.H. Spurgeon

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