DANIEL 2:19

Then the secret was revealed to Daniel in a night vision. So Daniel blessed the God of heaven. [NKJV]

That night the mystery was revealed to Daniel in a vision. Then Daniel praised the God of heaven: [FBV]

*NOT BY WISDOM NOR BY KNOWLEDGE, BUT BY MY REVELATION*

They four prayed at the same time for God's Revelation of the Mystery, but they did not all get the fulfilling of their prayers at the same time or method. One of them was the first to receive the fulfilling of their prayer point that same night and by Vision of the Night, while the others were shown nothing. However, God's way of sharing His things and solutions among men include that God would entrust to one man that's faithful to share with the others, the revelations, the gifts, the riches, the grace, etc of God.

Though the four of them prayed, God chose to reveal the secret or mystery to only Daniel; and Daniel, that's good at sharing matters and prayer point with his companions, did not immediately share this revelation of secret in night vision with them until he revealed the secret before Nebuchadnezzar, the king. Not as Joseph, who would immediately share his dreams or visions of the night with his brethren, even when they do not like him.

Blessed are you Daniel: for Flesh and Blood did not reveal that to you but my Father God in heaven. The Stone you saw in the secret will not just be a Rock on which the Lord would build His Church, but a Stone that would crush the feet or foundation of the built kingdoms of men and then the Stone will advance into great Mountain of God's House and Kingdom on earth forever.

Daniel was not just getting blessed of the God of heaven here by the revelation, but he also blessed the God of heaven for the revelation.

[Luke 10:21 BSB] — "At that time, Jesus rejoiced in the Holy Spirit and declared, “I praise You, Father, Lord of heaven and earth, because You have hidden these things from the wise and learned, and revealed them to little children. Yes, Father, for this was well-pleasing in Your sight."

Jesus Christ praised/thanked You, Father, and called You, Lord of Heaven and Earth. True Revelations always show You are the Lord of not just the Heavens but also Lord of the Earth, even when Satan pose as god of this world or ruler of this world. Daniel blessed You as God of Heaven, when Your Revelation ruled the earth where he received it.

The secret none of the wise and the learned men could find, was revealed through Daniel who was among the little children to whom the Father and Lord of Heaven and Earth chose to reveal secrets instead of revealing secrets to the wise and learned people.

Hence, it's by "Revelation" and not just by "Wisdom." Wisdom failed all the wise men and brought about swift death upon them, but Revelation of God saved and delivered the wise men from the danger their wisdom led them to. Faith and Revelation are greater than Wisdom and Understanding.

[1 Corinthians 1:19-21] — "For it is written: “I will destroy the wisdom of the wise; the intelligence of the intelligent I will frustrate.” Where is the wise man? Where is the scribe? Where is the philosopher of this age (PHD - Holders)? Has not God made foolish the wisdom of the world? For since in the wisdom of God, the world through its wisdom did not know Him, God was pleased through the foolishness of what was preached to save those who believe."

There's limit to how much the gifts of Wisdom and the gifts of Knowledge can reveal to men, which is why we must not trust in our own wisdom or understanding alone, but to keep depending on God for His Revelations and Guiding Lights, as in, to keep seeing through God's Spirit and Revelations, for which we must seek God every day to retain.