'Son' in the Bible

He answered, “Look! I see four men untied, walking around in the midst of the fire, and they are not hurt! And the appearance of the fourth is like a son of the gods!”

And you, his son, O Belshazzar, have not humbled your heart (mind), even though you knew all this.

“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.”

In the first year of Darius the son of Ahasuerus, of Median descent, who was made king over the realm of the Chaldeans—