'Son' in the Bible

The words of the Teacher, the son of David, king in Jerusalem:

Then that wealth was lost through bad luck; although he fathered a son, he has nothing left to give him.

Blessed are you, O land, when your king is the son of nobility, and your princes feast at the proper time -- with self-control and not in drunkenness.

Be warned, my son, of anything in addition to them. There is no end to the making of many books, and much study is exhausting to the body.