15 But while honouring our heavenly Father let us honour also the fathers of our flesh: since the Lord Himself has evidently so appointed in the Law and the Prophets, saying, Honour your father and your mother, that it may be well with you, and your days shall be long in the land. And let this commandment be especially observed by those here present who have fathers and mothers. Children, obey your parents in all things: for this is well pleasing to the Lord. For the Lord said not, He that loves father or mother is not worthy of Me, lest you from ignorance should perversely mistake what was rightly written, but He added, more than Me. For when our fathers on earth are of a contrary mind to our Father in heaven, then we must obey Christ's word. But when they put no obstacle to godliness in our way, if we are ever carried away by ingratitude, and, forgetting their benefits to us, hold them in contempt, then the oracle will have place which says, He that curses father or mother, let him die the death.
Source: Catechetical Lectures (New Advent)