Gregory of Nyssa

The thing is, I think, a dark saying, a shadow of what should come. For what is the stone that is laid but Christ Himself? for of Him Isaiah says, "And I will lay in the foundations of Sion a costly stone, precious, elect:" and Daniel likewise, "A stone was cut out without hands," that is, Christ was born without a man. For as it is a new and marvellous thing that a stone should be cut out of the rock without a hewer or stone-cutting tools, so it is a thing beyond all wonder that an offspring should appear from an unwedded Virgin.

On The Baptism Of Christ ↗

Cosmas Indicopleustes

He speaks of a stone cut out of the mountains without hands, and, in the vision, of the Son of Man coming on the clouds of heaven, whereby he indicates the Lord Christ on both sides of his descent—from Abraham and from the Virgin without human seed, for here the words without hands mean without human seed; while the words on the clouds of heaven are employed because the clouds without human hands carry as it were in their womb the rains to which they give birth. …

The Christian Topography, Book 2 ↗

Hippolytus of Rome

After these things, what does Daniel say? "A stone was cut without hands and struck the image." [Daniel 2:34] For in all events after the iron was mixed with clay and spread to the tips of the toes and while they are discordant with one another of the seed of men, what is left which is necessary to await but Christ who comes from the heavens as a stone which is cut from a mountain, so that he removes the kingdoms of this world, but also sets up the heavenly kingdom of the saints which will never be destroyed, and the same mountain …

Commentary on Daniel 2.13 ↗