When I had seen the vision, and sought for the meaning Here we are informed of Daniel's earnest desire to have the vision explained to him. For those that rightly know the things of God, cannot but desire to be led still further into the mystery of them. And those who desire to know the meaning of what they have seen or heard from God, must seek it, and that diligently, namely, by earnest prayer and close meditation. Then there stood before me as the appearance of a man The Scriptures frequently represent the angels as appearing in human forms, which it is likely they do, because, perhaps, there is nothing visible to us that so much resembles what they really are, as the human form does. And I heard a man's voice between the banks of Ulai That is, between me and the river Ulai. Which said, Gabriel, make this man understand the vision Explain it more clearly to him, if there be any thing in it which he does not perfectly understand. He who spake this seems to be the same angel who is spoken of Daniel 8:13, and called there that certain saint, by way of distinction; for he here speaks as one that had authority over the angel Gabriel.
Related Commentaries of Daniel 8:15
Daniel 8:15-16
15 And it came to pass, when I, even I Daniel, had seen the vision, and sought for the meaning, then, behold, there stood before me as the appearance of a man.
16 And I heard a man's voice between the banks of Ulai, which called, and said, Gabriel, make this man to understand the vision.