John Gill Commentary Daniel 5:24

"Then was the part of the hand sent from before him, and this writing was inscribed." — Daniel 5:24 (ASV)

Then was the part of the hand sent from him
That is, from God: being thus reproached and blasphemed, at that very instant, and for that reason, because the vessels of his sanctuary were profaned, and idol gods were praised, and he despised; he caused part of a hand, the writing fingers of it, to appear on the wall of the king's palace: and this writing was written ;
which was then upon the wall, and he points to it.