'Son of Man' in the Bible

“I kept looking in the night visions,And behold, on the clouds of heavenOne like a Son of Man was coming,And He came up to the Ancient of DaysAnd was presented before Him.

So he came near where I was standing, and when he came I was frightened and fell face downward; but he said to me, “Understand, son of man, that the [fulfillment of the] vision pertains to [events that will occur in] the time of the end.”