Deuteronomy 19:8

8 Forsooth when thy Lord God hath alarged thy terms, as he swore to thy fathers, and hath given to thee all the land which he promised to them;

Deuteronomy 19:8 Meaning and Commentary

Deuteronomy 19:8

And if the Lord thy God enlarge thy coast
Extend it further than it was upon their first settlement, even carry it as far as the river Euphrates, as in the times of Solomon, ( 1 Kings 4:21 1 Kings 4:24 ) . Jarchi interprets it of such an enlargement as to give them the land of the Kenites, the Kenizzites and Kadmonites:

(as he hath sworn unto thy fathers), and give thee all the land which
he promised to give unto thy, fathers:
Abraham, Isaac, and Jacob; see ( Genesis 15:19 ) ( Genesis 26:3 Genesis 26:4 ) ( Genesis 28:13 Genesis 28:14 ) .

Deuteronomy 19:8 In-Context

6 lest peradventure the next kinsman of him, whose blood is shed out, be pricked with sorrow, and pursue, and (over)take him, if the way is longer, and slay his life, that is not guilty of death; for it is showed that he had not any hatred before against him that is slain. (lest the next of kin of him whose blood is shed out, be pricked with sorrow, and he pursue the killer, and overtake him, because the way is long, and then take the life of him who is truly not guilty of murder; for it was shown that he had no hatred before against that person who was killed.)

7 Therefore I command to thee, that thou separate three cities of even space betwixt themselves. (And so I command thee to set apart three cities with even space between them.)

8 Forsooth when thy Lord God hath alarged thy terms, as he swore to thy fathers, and hath given to thee all the land which he promised to them;

9 if nevertheless thou keepest his commandments, and doest those things which I command to thee today, that thou love thy Lord God, and go in his ways in all time (so that thou love the Lord thy God, and go in his ways at all times), (then) thou shalt add to thee three other cities, and (so) thou shalt double the number of the foresaid cities,

10 that guiltless blood be not shed out in the midst of the land which thy Lord God shall give to thee to have in possession, lest thou be guilty of blood. (so that innocent blood be not shed out in the midst of the land which the Lord thy God shall give thee to have for a possession, and that thou be guilty of shedding that innocent blood.)