The watcher in Daniel
The Bible’s clearest use of watcher comes in Daniel 4. King Nebuchadnezzar dreams of a huge tree being cut down, then sees a heavenly being descend from heaven. The dream calls this being a watcher and a holy one (Daniel 4:13). This is not presented as a lesson about angelic classes. It is a warning to a proud king.
The announcement in the dream is described as the decree of the watchers and the word of the holy ones (Daniel 4:17). Yet when Daniel explains its meaning, he identifies it as the decree of the Most High against Nebuchadnezzar (Daniel 4:24). The heavenly messenger speaks and acts under God's authority, and the dream's purpose is to show that God rules over human kingdoms.
This is the interpretation, O king, and this is the decree of the most High, which is come upon my lord the king:
Where the name Grigori comes from
Grigori does not appear in the KJV Bible. It comes from a Greek word, gregoroi, meaning watchers or wakeful ones. The name became well known through later Jewish writings, especially 1 Enoch, which tells a dramatic story about Watchers who came to earth, sinned, and spread corruption.
That story helps explain why people often use Watchers and Grigori as names for fallen angels. But Daniel itself calls its watcher holy, not rebellious. Since 1 Enoch is not part of the biblical canon for most Christians, its details should not be treated as though Scripture states them directly.
Were they fallen angels?
Scripture does teach that some angels sinned and now face judgement. Peter refers to angels who sinned, and Jude speaks of angels who did not remain in their proper place (2 Peter 2:4; Jude 1:6). Neither writer calls these angels Watchers or Grigori.
Some readers connect those passages with the sons of God and daughters of men before the flood (Genesis 6:1-4). Others understand the sons of God there as human rulers or as the godly line associated with Seth. Christians who take Scripture seriously have reached different conclusions, because the passage does not explain every detail. It is best to hold those connections with humility.
And the angels which kept not their first estate, but left their own habitation, he hath reserved in everlasting chains under darkness unto the judgment of the great day.
What can be held with confidence
The Bible does not give a full catalogue of angelic ranks, names, or stories. It does show that holy angels serve God's purposes, while rebellious spiritual beings remain accountable to him. No spiritual power stands beyond his rule.
So, when reading Daniel 4, keep the focus where Daniel places it. Nebuchadnezzar is humbled, then recognises that heaven rules and that God can bring down the proud (Daniel 4:34-35). The watcher matters in the story, but the central truth is the sovereignty of God. Read the passages for yourself, and let what is clear guide the questions that remain open.
And at the end of the days I Nebuchadnezzar lifted up mine eyes unto heaven, and mine understanding returned unto me, and I blessed the most High, and I praised and honoured him that liveth for ever, whose dominion is an everlasting dominion, and his kingdom is from generation to generation: