Genesis 13:16-18 meaning

Mention of Abram's descendants had been general. Genesis 12:7 presumes he will have them, and 12:2 says that he will become a "great nation." Verse 16 is more explicit. A nation in ancient times could be a relatively small group. The dust of the earth represents the large number of Abram's offspring. Similar phrases like, "as numerous as the stars in the sky" and "as the sand on the seashore" are used later (Genesis 15:5, 22:17, 28:14; 2 Chronicles 1:9; Numbers 23:10). In other words, they will be uncountable. The New Testament sees believing Gentiles as well as faithful Jews as being counted as Abram's spiritual descendants by faith (Romans 4:16-18; Galatians 3:29), so that in heaven there will be "a great multitude which no man can number, from every nation, from all tribes and peoples and tongues" (Revelation 7:9). Yet, Abram has no children at this point in the story.

God told Abram to Arise, walk about the land through its length and breadth; for I will give it to you. Abram was to inspect and exercise authority over the land, anticipating the promised ownership. Early Jewish customs understood this traveling through the length and breadth of the land to be a symbolic act constituting a mode of legal acquisition termed ḥazakah in Hebrew (Deuteronomy 11:24; Joshua 1:3).

In both the Egyptian and Hittite realms, the king had to undertake a periodic ceremonial walk around a field or a tour of his Kingdom in order to symbolize the renewal of his sovereignty over the land. The same symbol of acquiring land by walking through it is also known from the ancient Roman law. How Abram would take possession of the land is not explained to him, the land is still inhabited by the Canaanites and Sarai remains barren. Yet, Abram continues to have faith that God's promise is true. Pursuant to the suzerain vassal type treaty where land is rewarded for faithfulness, Abram lays claim to the land, believing that God will provide the descendants to possess it.

With the promise given again, Abram now moved south by the Oaks of Mamre which Which are in Hebron. Hebron was an Anakite city (Numbers 13:22) originally called Kiriath-Arba, "city of Arba" (Joshua 14:15, 15:13), located in the forested highlands just north of the Negev, about nineteen miles southwest of Jerusalem (Genesis 12:9; Joshua 17:15). During the middle Bronze Age (circa 2000-1500 B.C.), during the time the patriarchs lived, Hebron was a major settlement in the Judean hills. It was roughly between six and seven acres, heavily fortified, and had some large public buildings. Abraham, Isaac, and Jacob all lived there (Genesis 18:1, 35:27, 37:14). Sarah, Abraham, Isaac, Rebekah, Jacob, and Leah were buried in Hebron (Genesis 23:19, 35:27-29, 49:29-32, 50:13). There, Abram built an altar to the Lord.