What special things are we to consider in the Ten Commandments?

Larger CatechismQ 100. What special things are we to consider in the Ten Commandments?A. We are to consider, in the Ten Commandments, the preface, the substance of the commandments themselves, and several reasons annexed to some of them, the more to enforce them.1Ephesians 6:1-3 6:1 Children, obey your parents in the Lord, for this is right. “Honor your father and mother” (this is the first commandment with a promise), “that it may go well with you and that you may live long in the land.” (ESV)