Deuteronomy 19:8

8 The LORD your God will increase the size of your territory. He took an oath and promised your fathers he would do it. He will give you the whole land he promised 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 If he doesn't go to one of those cities, the dead man's nearest male relative might become very angry. He might chase the man. If the city is too far away, he might catch him and kill him. But he isn't worthy of death, because he didn't hate his neighbor.

7 That's why I command you to set apart for yourselves three cities.

8 The LORD your God will increase the size of your territory. He took an oath and promised your fathers he would do it. He will give you the whole land he promised them.

9 But he'll do it only if you are careful to obey all of the laws I'm commanding you today. I'm commanding you to love the LORD your God. I want you to live always as he wants you to live. When he gives you additional land, you must set apart three more cities.

10 Do it so the blood of those who aren't guilty of murder won't be spilled in your land. It's the land the LORD your God is giving you as your own.