"Honour thy father and thy mother: that thy days may be long upon the land which the LORD thy God giveth thee. -Exodus 20:12"
“Would you like to explain the meaning of the 5th commandment? Thank you. “ Yumi Ogawa
The word "honour" covers a lot of ground. We can be certain that it means that we should provide support for our parents if they need it.
That is why Jesus rebuked the Pharisees who neglected their parents to serve their religion.
Mar 7:12 And ye suffer him no more to do ought for his father or his mother;
Mar 7:13 Making the word of God of none effect through your tradition, which ye have delivered: and many such like thing
We can also be sure that it means we must obey their lawful instructions while under their roof.
To disobey the parents was a death sentence.
Deu 21:18 If a man have a stubborn and rebellious son, which will not obey the voice of his father, or the voice of his mother, and that, when they have chastened him, will not hearken unto them:
Deu 21:19 Then shall his father and his mother lay hold on him, and bring him out unto the elders of his city, and unto the gate of his place;
Adam Clarke wrote:
“Honor thy father and thy mother - There is a degree of affectionate respect which is owing to parents, that no person else can properly claim. For a considerable time parents stand as it were in the place of God to their children, and therefore rebellion against their lawful commands has been considered as rebellion against God. This precept therefore prohibits, not only all injurious acts, irreverent and unkind speeches to parents, but enjoins all necessary acts of kindness, filial respect, and obedience. We can scarcely suppose that a man honors his parents who, when they fall weak, blind, or sick, does not exert himself to the uttermost in their support. In such cases God as truly requires the children to provide for their parents, as he required the parents to feed, nourish, support, instruct, and defend the children when they were in the lowest state of helpless infancy.”