Daniel 7:13 (BSB)

In my vision in the night I continued to watch, and I saw One like the Son of Man coming with the clouds of heaven. He approached the Ancient of Days and was led into His presence.

From Daniel 7. Also in the ESV.

Commentary on Daniel 7:13

• John Calvin (Reformed), Calvin's Commentaries on Daniel 7:13: After Daniel has narrated how he saw God on the throne of judgment, openly exercising his power and laying open to the world what was formerly hidden from it, namely, his supreme authority in its government, he now adds the second part of the vision, As it were the Son of man appeared in the clouds.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Daniel 7:9-14: Whether we understand the fourth beast to signify the Syrian empire, or the Roman, or the former as the figure of the latter, it is plain that these verses are intended for the comfort and support of the people of God in reference to the persecutions they were likely to sustain both from the one and from the other, and from all their proud enemies...
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Daniel 7:13: I saw in the night visions,.... Very probably the same night in which he had the dream and vision of the four beasts; but this that follows, being a new object presented, is introduced and prefaced after this manner; as well as, being something wonderful and worthy of attention, has a "behold" prefixed to it: and, behold one like the Son of man came with...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Daniel 7:13: Son of man--(See on Eze 2:1). Not merely Son of David, and King of Israel, but Head of restored humanity (corresponding to the world-wide horizon of Daniel's prophecy); the seed of the woman, crushing Antichrist, the seed of the serpent, according to the Prot-evangel in Paradise (Gen 3:15).