'Son' in the Bible

He answered, Look, I see four men loose, walking in the midst of the fire, and they are unharmed; and the aspect of the fourth is like a son of the gods.

You, his son, Belshazzar, have not humbled your heart, though you knew all this,

I saw in the night visions, and behold, there came with the clouds of the sky one like a son of man, and he came even to the ancient of days, and they brought him near before him.

So he came near where I stood; and when he came, I was frightened, and fell on my face: but he said to me, Understand, son of man; for the vision belongs to the time of the end.

In the first year of Darius the son of Ahasuerus, of the seed of the Medes, who was made king over the realm of the Chaldeans,