Infants would give praise to the Messiah.

OT Prophecy NT Fulfillment
Psalm 8:2
"Out of the mouth of babes and sucklings hast thou ordained strength because of thine enemies, that thou mightest still the enemy and the avenger."
Matthew 21:15-16
"[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?"

Tanakh - Ketuvim - Psalms 8:3

"Out of the mouth of babes and sucklings hast Thou founded strength, because of Thine adversaries; that Thou mightest still the enemy and the avenger."

Hebrew OT - Psalms 8:3

תיבשהל ךיררוצ ןעמל זע תדסי םיקניו םיללוע יפמ
.םקנתמו ביוא

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