Deuteronomy 4:40
“Thou shalt keep therefore 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 upon the earth, which the Lord thy God giveth thee, for ever.”
To drive out nations from before thee greater and mightier than thou art, to bring thee in, to give thee their land for an inheritance, as it is this day.
Know therefore this day, and consider it in thine heart, that the Lord he is God in heaven above, and upon the earth beneath: there is none else.
Thou shalt keep therefore 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 upon the earth, which the Lord thy God giveth thee, for ever.
Then Moses severed three cities on this side Jordan toward the sunrising;
That the slayer might flee thither, which should kill his neighbour unawares, and hated him not in times past; and that fleeing unto one of these cities he might live:
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“Ye shall walk in all the ways which the Lord 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.”
“That it may be well with thee, and thou mayest live long on the earth.”
“Honour thy father and thy mother: that thy days may be long upon the land which the Lord thy God giveth thee.”
“That thou mayest love the Lord thy God, and that thou mayest obey his voice, and that thou mayest cleave unto him: for he is thy life, and the length of thy days: that thou mayest dwell in the land which the Lord sware unto thy fathers, to Abraham, to Isaac, and to Jacob, to give them.”
“Then Naomi her mother in law said unto her, My daughter, shall I not seek rest for thee, that it may be well with thee?”