Deuteronomy 5:16

Honour thy father and thy mother, as the Lord thy God hath
commanded thee
And is the first commandment with promise, as the apostle observes, ( Ephesians 6:2 Ephesians 6:3 ) with a promise of long life and happiness in the land of Canaan, as follows:

that thy days may be prolonged;
see ( Exodus 20:12 ) here it is added,

and that it may go well with thee;
and which the apostle also has in the place referred to:

in the land which the Lord thy God giveth thee;
the land of Canaan; which the same apostle explains to a greater latitude,

that thou mayest live long on the earth;
applying it to Christians under the Gospel dispensation, whether Jews or Gentiles.