'Son' in the Bible

And he said to me, Son of man, the Lord God has said, These are the rules for the altar, when they make it, for the offering of burned offerings on it and the draining out of the blood.

And the Lord said to me, Son of man, take to heart, and let your eyes see and your ears be open to everything I say to you about all the rules of the house of the Lord and all its laws; and take note of the ways into the house and all the ways out of the holy place.

They are not to come near any dead person so as to become unclean: but for a father or mother or son or daughter or brother or for a sister who has no husband, they may make themselves unclean.

And he said to me, Son of man, have you seen this? Then he took me to the river's edge.