The Bible teaches that when a child marries he is to leave his father and mother and cleave unto his wife. (Genesis 2:24). Parental control that reaches into marriage is the source of many divorces and much marital strife. Yet, a child is to honor his parents for all their life.
The definition of the word "honor" means "to esteem, respect", and the Greek word from which "honor" is translated means "to prize, i.e. to fix a valuation upon" (Strong). There are many applications of children honoring their parents.
One of the violations of this commandment today, is children esteeming and respecting the opinions of their peers above those of their parents. The idea that parents are out of date and out of touch, is a devaluation of parents. Children should value the experience and wisdom of their parents more than their peers.
It says in Exodus 20:12 and Deuteronomy 5:16 that honoring your father and mother is the first commandment with a promise. This command is the first one of the Ten Commandments that gives a promise of blessing to those who obey it. The promised blessing is long life and things going well.
John is the only gospel writer to give us this account of Jesus' last ministry to His mother. Even when Jesus faced His own extreme suffering on the cross, Jesus thought of His mother and honored her by making sure that she would be taken care of after He was gone.