Biblical chronology is a fascinating and frustrating field of study. One major problem is dependence upon Egyptian and Assyrian "anchors" of synchronism. Another problem is the minimalist movement of Near East archaeology which began in the 1970's. The following information is from my book, "Pharaohs of the Bible: 4004 - 960 B.C."
YHWH's Initial Promise of the land of Canaan to Abram's Seed
"1 Now the LORD had said to Abram, Get you out of your
country, and from your kindred, and from your father's house, to a land
that I will show you: 2 And I will make of you a great nation, and I
will bless you, and make your name great; and you shall be a blessing: 3
And I will bless them that bless you, and curse him that curses you:
and in you shall all families of the earth be blessed. 4 So Abram
departed, as the LORD had spoken to him; and Lot went with him: and
Abram was seventy and five years old when he departed out of Haran. 5
And Abram took Sarai his wife, and Lot his brother's son, and all their
substance that they had gathered, and the souls that they had gotten in
Haran; and they went forth to go into the land of Canaan; and into the
land of Canaan they came. 6 And Abram passed through the land to the
place of Sichem, to the plain of Moreh. And the Canaanite was then in
the land. 7 And the LORD appeared to Abram, and said, To your seed will I
give this land: and there built he an altar to the LORD, who appeared
to him. 8 And he removed from there to a mountain on the east of Bethel,
and pitched his tent, having Bethel on the west, and Hai on the east:
and there he built an altar to the LORD, and called on the name of the
LORD. 9 And Abram journeyed, going on still toward the south. 10 And
there was a famine in the land: and Abram went down into Egypt to
sojourn there; for the famine was grievous in the land." (Genesis
12:1-10 American King James)
1996 Abram was born in Ur of Chaldee
1921 God's promise to Abram in Canaan; Abram continued on to Egypt due to famine
1919 Abram returned to Hebron in Canaan
1918 Abram and Lot separated due to abundance of flocks
1916 Lot dwelt in Sodom
1913 Abram rescued Lot and received blessing of Melchizedek
1910 Ishmael was born when Abram was 86 years old
1896 Isaac was born when Abraham was 100 years old; his new name given one year prior
1891 Ishmael mocked Isaac when Isaac was weaned, beginning 400 years of persecution
1821 Abraham died
Abram left Egypt with lots of stuff, including Egyptian servants. (God promised Abram's seed would also leave Egypt with lots of stuff.) Abram got Haggai, Sarai's Egyptian servant, pregnant; thus Ishmael is half Hebrew and half Egyptian. Isaac was fully Hebrew. Ishmael "mocking" Isaac was the first time an Egyptian mocked/afflicted a Hebrew.
afflicted is #6031 in Strongs: anah in Hebrew: A primitive root (possibly rather identical with H6030 through the idea of looking down or browbeating); to depress literally or figuratively, transitively or intransitively (in various applications). (sing is by mistake for H6030.): - abase self, afflict (-ion, self), answer [by mistake for H6030], chasten self, deal hardly with, defile, exercise, force, gentleness, humble (self), hurt, ravish, sing [by mistake for H6030], speak [by mistake for H6030], submit self, weaken, X in any wise.
"13 And he said to Abram, Know of a surety that your seed shall be a stranger in a land that is not theirs, and shall serve them; and they shall afflict them four hundred years; 14 And also that nation, whom they shall serve, will I judge: and afterward shall they come out with great substance. 15 And you shall go to your fathers in peace; you shall be buried in a good old age. 16 But in the fourth generation they shall come here again: for the iniquity of the Amorites is not yet full." (Genesis 15:13-16)
"16 Now to Abraham and his seed were the promises made. He said not, And to seeds, as of many; but as of one, And to your seed, which is Christ. 17 And this I say, that the covenant, that was confirmed before of God in Christ, the law, which was four hundred and thirty years after, cannot cancel, that it should make the promise of none effect." (Galatians 3:16-17)