Verses 8, 9. - In case their land should be extended, in ease they should come to possess the whole territory promised by God to the patriarchs, so that their domain should reach from the Nile to the Euphrates (Genesis 15:18) - an event which should be realized only if they should continue steadfast in their obedience to all that God had enjoined upon them, and an event which in point of fact never was realized, for even under David and Solomon there were extensive territories within these limits which were not incorporated with the kingdom of Israel - in that case they were to add other three cities of refuge to those already appointed.

19:1-13 Here is the law settled between the blood of the murdered, and the blood of the murderer; provision is made, that the cities of refuge should be a protection, so that a man should not die for that as a crime, which was not his willing act. In Christ, the Lord our Righteousness, refuge is provided for those who by faith flee unto him. But there is no refuge in Jesus Christ for presumptuous sinners, who go on still in their trespasses. Those who flee to Christ from their sins, shall be safe in him, but not those who expect to be sheltered by him in their sins.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. 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.