What is the meaning of Matthew 21:14-16?

14 And the blind and the lame came to him in the temple; and he healed them. 15 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, 16 And said unto him, Hearest thou what these say? And Jesus saith unto them, Yea; have ye never read, Out of the mouth of babes and sucklings thou hast perfected praise? (Matthew 21:14-16 KJV)

William Burkitt’s Commentary

Observe here, 1. That our blessed Saviour works his miracles not secretly in a corner, but openly in the temple, and submits them to the examination of all persons senses. A miracle is a supernatural action, which is obvious to sense. Popish miracles are talked of by many, but seen by none.

Observe, 2. That Christ’s enemies are never more incensed, than when his divine power is most exerted, and his divine nature owned and acknowledged. When the chief priests saw the miracles which Jesus did, and heard the children crying Hosanna to the Son of David, they, were sore displeased.

Observe, 3. That Christ can glorify himself by the mouth of babes and sucklings; he can form and fit up what instruments he pleases, to show forth his excellencies, and celebrate his praises. Out of the mouths of babes and suckling thou hast perfected praise.