“And when the chief priests and scribes saw the wonderful things that he did, and the children crying in the temple, and saying, Hosanna to the Son of David; they were sore displeased,”
Matthew 21:15 — Greek Interlinear
Church Fathers on Matthew 21:15
When Jesus entered with the multitudes, the whole city of Jerusalem was moved, wondering at the crowds, and not knowing the power.
With good reason were they moved at sight of a thing so to be wondered at. Man was praised as God, but it was the God that was praised in the man. But, I suppose, that neither they who praised knew what they praised, but the Spirit that suddenly inspired there poured forth the words of truth.
Moreover, when Jesus entered the true Jerusalem, they cried out, wondering at His heavenly virtues, and said, 'Who is this King of glory?' [Ps 24:8]