The chief priests were angry (Mt 21:15-21:15)

“The chief priests

And the Scribes

Saw the amazing things

That Jesus did.

The children were crying out

In the Temple.

‘Hosanna to the Son of David!’

They became angry.”

 

ἰδόντες δὲ οἱ ἀρχιερεῖς καὶ οἱ γραμματεῖς τὰ θαυμάσια ἃ ἐποίησεν καὶ τοὺς παῖδας τοὺς κράζοντας ἐν τῷ ἱερῷ καὶ λέγοντας Ὡσαννὰ τῷ υἱῷ Δαυείδ, ἠγανάκτησαν,

 

This is unique to Matthew, who said that the chief priests and the scribes saw all the amazing and wonderful things that Jesus did (ἰδόντες δὲ οἱ ἀρχιερεῖς καὶ οἱ γραμματεῖς τὰ θαυμάσια ἃ ἐποίησεν).  The children were crying out in the Temple (καὶ τοὺς παῖδας τοὺς κράζοντας ἐν τῷ ἱερῷ).  They were saying to Jesus “Hosanna to the son of David (καὶ λέγοντας Ὡσαννὰ τῷ υἱῷ Δαυείδ)!”  These little children seem to praise Jesus and ask him to save them.  Obviously, this made the priests and scribes angry (ἠγανάκτησαν).  Matthew always pitted the Jewish leaders against Jesus since Jesus seemed to challenge their authority.