Original Verse:
Deuteronomy Chapter 4 Verse 40And thou shalt keep his statutes, and his commandments, which I command thee this day, that it may go well with thee, and with thy children after thee, and that thou mayest prolong thy days in the land, which Jehovah thy God giveth thee, for ever.

Reference Verses:
Numbers Chapter 10 Verse 29And Moses said unto Hobab, the son of Reuel the Midianite, Moses` father-in-law, We are journeying unto the place of which Jehovah said, I will give it you: come thou with us, and we will do thee good; for Jehovah hath spoken good concerning Israel.
Exodus Chapter 23 Verse 26There shall none cast her young, nor be barren, in thy land: the number of thy days I will fulfil.
Deuteronomy Chapter 6 Verse 18And thou shalt do that which is right and good in the sight of Jehovah; that it may be well with thee, and that thou mayest go in and possess the good land which Jehovah sware unto thy fathers,
Leviticus Chapter 22 Verse 31Therefore shall ye keep my commandments, and do them: I am Jehovah.
Deuteronomy Chapter 11 Verse 9and that ye may prolong your days in the land, which Jehovah sware unto your fathers to give unto them and to their seed, a land flowing with milk and honey.
Deuteronomy Chapter 12 Verse 25Thou shalt not eat it; that it may go well with thee, and with thy children after thee, when thou shalt do that which is right in the eyes of Jehovah.
Deuteronomy Chapter 5 Verse 16Honor thy father and thy mother, as Jehovah thy God commanded thee; that thy days may be long, and that it may go well with thee, in the land which Jehovah thy God giveth thee.
Deuteronomy Chapter 22 Verse 7thou shalt surely let the dam go, but the young thou mayest take unto thyself; that it may be well with thee, and that thou mayest prolong thy days.
Deuteronomy Chapter 4 Verse 2Ye shall not add unto the word which I command you, neither shall ye diminish from it, that ye may keep the commandments of Jehovah your God which I command you.
Isaiah Chapter 65 Verse 20There shall be no more thence an infant of days, nor an old man that hath not filled his days; for the child shall die a hundred years old, and the sinner being a hundred years old shall be accursed.
Zechariah Chapter 8 Verse 4Thus saith Jehovah of hosts: There shall yet old men and old women dwell in the streets of Jerusalem, every man with his staff in his hand for very age.
Deuteronomy Chapter 5 Verse 33Ye shall walk in all the way which Jehovah your God hath commanded you, that ye may live, and that it may be well with you, and that ye may prolong your days in the land which ye shall possess.
Deuteronomy Chapter 32 Verse 47For it is no vain thing for you; because it is your life, and through this thing ye shall prolong your days in the land, whither ye go over the Jordan to possess it.
Deuteronomy Chapter 25 Verse 15A perfect and just weight shalt thou have; a perfect and just measure shalt thou have: that thy days may be long in the land which Jehovah thy God giveth thee.