1 Enoch 14 interprets the Ancient of Days to be God.
1 Enoch 14:18-22 in Ephraim Isaac (trans), The Old Testament Pseudepigrapha, ed. James H. Charlesworth, 2 vols. (New York: Yale University Press, 1983), 1:21
18 And I observed and saw inside it a lofty throne—its appearance was like crystal and its wheels like the shining sun; and (I heard?) the voice of the cherubim; 19 and from beneath the throne were issuing streams of flaming fire. It was difficult to look at it. 20 And the Great Glory was sitting upon it—as for his gown, which was shining more brightly than the sun, it was whiter than any snow. 21 None of the angels was able to come in and see the face of the Excellent and the Glorious One; and no one of the flesh can see him—22 the flaming fire was round about him, and a great fire stood before him. No one could come near unto him from among those that surrounded the tens of millions (that stood) before him.