"Hosanna! Blessed is he who comes in the name of the Lord" comes directly from John 12, the instance for which Palm Sunday derives its name; in which the people of Jerusalem pave the streets with palm branches and garments, an ancient version of a red carpet, for Jesus and the donkey colt he rides upon. Earlier in the text, Mary pours a pint of expensive nard, a costly essential oil, on Jesus feet.

Hosanna!
Blessed is He who comes in the name of the Lord!

The One we have long awaited, the Messiah, has come.
Hosanna!
Riding into Jerusalem, not on a warhorse, but on a young donkey,
Hosanna!
The Prince of Peace has come, the one who heals our wounds.
Hosanna!

Everything that was foretold, Christ has fulfilled.
We offer a sacrifice of praise and thanksgiving.
We set up a banquet, and pour costly perfume at His feet.
Blessed is he who comes in the name of the Lord.

This is Jesus
Whose name is glorified
This is Jesus
High and lifted up

Hosanna!
Blessed is He who comes in the name of the Lord!