filial duty
Noun
Meaning
duty of a child to its parents
Source: WordNetHypernyms
Hyponyms
Examples
A lively and lasting sense of filial duty is more effectually impressed on the mind of a son or daughter by reading King Lear, than by all the dry volumes of ethics, and divinity, that ever were written.
If the Great Way perishes there will morality and duty. When cleverness and knowledge arise great lies will flourish. When relatives fall out with one another there will be filial duty and love. When states are in confusion there will be faithful servants.