Q. 133. What is the reason annexed to the fifth commandment, the more to enforce it?

A.
The reason annexed to the fifth commandment, in these words, That thy days may be long upon the land which the Lord thy God giveth thee,[718] is an express promise of long life and prosperity, as far as it shall serve for God’s glory and their own good, to all such as keep this commandment.[719]

[718] Exodus 20:12. Honour thy father and thy mother: that thy days may be long upon the land which the LORD thy God giveth thee.
[719] Deuteronomy 5:16. Honour thy father and thy mother, as the LORD thy God hath commanded thee; that thy days may be prolonged, and that it may go well with thee, in the land which the LORD thy God giveth thee. 1
Kings 8:25. Therefore now, LORD God of Israel, keep with thy servant David my father that thou promisedst him, saying, There shall not fail thee a man in my sight to sit on the throne of Israel; so that thy children take heed to their way, that they walk before me as thou hast walked before me.
Ephesians 6:2-3. Honour thy father and mother; which is the first commandment with promise; That it may be well with thee, and thou mayest live long on the earth.