And I heard a man’s voice from the Ulai calling, “Gabriel, tell this man the meaning of the vision.”

Daniel had seen the appearance of a man; now he hears a voice addressing the man, and naming him Gabriel, "Hero of God." It is to be noted that this is the earliest instance of the naming of angels in Scripture.

And I heard a man's voice between the banks of Ulai, which called, and said, Gabriel, make this man to understand the vision.

And I heard a man's voice between the banks of Ulai - See the notes at Daniel 8:2. The voice seemed to come from the river, as if it were that of the Genius of the river, and to address Gabriel, who stood near to Daniel on the shore. This was doubtless the voice of God.

Daniel 8:16 Context. 13 Then I heard one saint speaking, and another saint said unto that certain saint which spake, How long shall be the vision concerning the daily sacrifice, and the transgression of desolation, to give both the sanctuary and the host to be trodden under foot?

16 And I heard a man’s voice from the Ulai calling, “Gabriel, tell this man the meaning of the vision.” 17 As he came near the place where I was standing, I was terrified and fell prostrate. “Son of man,”[a] he said to me, “understand that the vision concerns the time of the end.”

What does Daniel 8:16 mean? In response to his desire (Daniel 8:15) to understand his vision (Daniel 8:1–2), Daniel heard a man's voice. The voice arises from between the banks of the canal where Daniel saw symbolic images of a ram and goat (Daniel 8:3–12).

Daniel 8:16 And I heard a man’s voice from the Ulai calling, “Gabriel, tell this man the meaning of the vision.”... Read verse in New International Version.

And I heard a man's voice between the banks of the Ulai, which called, and said, Gabriel, make this man to understand the vision. And I heard the voice of a man calling from between the banks of the Ulai: “Gabriel, explain the vision to this man.”

16 And I heard a man’s voice from the Ulai calling, “Gabriel, tell this man the meaning of the vision.” 17 As he came near the place where I was standing, I was terrified and fell prostrate. “Son of man,” he said to me, “understand that the vision concerns the time of the end.”