What is the fourth commandment of God? The fourth commandment of God is: Honor thy father and thy mother.
Honor thy father and thy mother, that thou mayest be long-lived upon the land which the Lord thy God will give thee. (Exodus 20:12)
What are we commanded by the fourth commandment? By the fourth commandment we are commanded to respect and love our parents, to obey them in all that is not sinful, and to help them when they are in need.
Children, obey your parents in the Lord, for that is right. (Ephesians 6:1)
Further reading: CCC 2197-2200