2 Honor your father and mother, which is the first commandment with a promise, 3 so that it may go well with you and that you may have a long life in the land.
The word honor in Greek has the meaning of a person estimating a price on something they value. If you have something you love, its price will be very high. Honor also means to respect those in high authority, especially one’s father who always look out for their children’s best interest.
The reason why there is a blessing attached to honoring one’s father is that it will teach and prepare the child, in turn, to honor the Father in heaven. If a child or a young adult dishonor their father who they see here on earth, how can they honor the Mighty Father in heaven who they cannot see?
When you honor [obey] your earthly father, your lifespan will lengthen. Why? Because he will teach you to avoid things, people, and places that will be harmful to you so that your life can be protected. God will look down from heaven and through your obedience, He will bless you for keeping the Word of God.