Honor your father and your mother: that your days may be long upon the land which the LORD your God gives you.
All Commentaries on Exodus 20:12 Go To Exodus 20
Augustine of Hippo
AD 430
So if you are afraid your son won’t take care of you once he has his hands on the money, you are in fact making filial piety a commodity for sale, not a quality to be loved. How much better a poor man’s son, the son, for instance, of an old man in the direst poverty, who expects nothing from his father because he hasn’t got anything he can leave him but who all the same supports his father with his labor and the sweat of his brow. Sometimes, of course, the children of rich people too take the fear of God seriously, and that’s why they show consideration to their parents, not because they expect something from them but because they are their parents who brought them into the world and brought them up, and God gave a commandment which says “Honor your father and your mother.” But where the reward is there for all to see, the genuineness of their sentiments is not so obvious.