You are incorrect and are using extrabiblical sources:
"40 The time that the Israelites had lived in Egypt was four hundred thirty years. 41 At the end of four hundred thirty years, on that very day, all the companies of the Lord went out from the land of Egypt." Ex. 12:40-41 (NRSV)
You are really kidding -right?
You used Stephen's recorded speech as if it was absolutely the Word of God; but though Stephen was a man of God and was the first martyr, his history was not correct and was got from extrabiblical sources.
His history is in error and can be proven so by calculating the dates by using the Torah.
Paul heard Stephen's speech and was more learned than Stephen in the Law and the ancient writings used by the Israelites, who studied the books,
and Paul states [as Scripture truth]:
Gal 3:17 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 disannul, that it should make the promise of none effect.
the Covenant was confirmed 430 years before the Law was given at Sinai, so now what do you do?
You go back to the Covenant confirmed, and add up the years to the entry into Egypt:
The Covenant was Confirmed before Ishmael was even born!
So what do you do now?
Ishmael was 15 years old when Isaac was born.
Isaac lived 60 years and begat Jacob
Jacob lived to age 130 and entered Egypt.
130 + 60 + 15 = 205 years before the entry into Egypt. But there was the additional time to add to that going back to the years before Ishmael was born when the promise was made. The Hebrew sources say that was
20 years before Issac was born and 5 years before Ishmael was born.
So what do you do now?
So entry into Egypt was 220 years after the confirmed Covenant.
So what do you do now?
Moses was the son of Levi's daughter, and he led Israel out at age 82, so 210 + 82 = 292 years from the confirmed Covenant to the Law, but that leaves a gap to fill in of the age of Jochebed when she bore Moses, and she certainly bore him 82 years before the Law.
You need the age of Jochebed when she bore Moses to complete the timeline -so what do you do now?
The Jewish writings say she was 128 when she bore Moses and that she was herself born at the gates of Egypt, to her father, Levi...so what do you do now?
How can you look at the confirmed covenant 210 years before Israel enters Egypt and try to make them there for 430 years more? It is not adding up, is it?
The Covenant was not 650 years before the Law, which is what you have using Stephen's speech which is contradicted by the facts in Genesis!
YHWH said at the confirmed covenant that Abraham's seed would come back to the their inheritance in the fourth generation, and they did.
Abraham's generations are counted by God through:
Isaac
Jacob
Levi
Moses
4 generations counted because Moses is the son of Levi's daughter, and counted as Levi's seed because Levi's son's, son married his aunt Jochebed. God counted it that way, and if you try to make 430 years from the entry of Israel into Egypt, then you make the Torah a lie, for Jochebed is Moses' mother, and she is Levi's daughter. The histories of the Jews tell us Jochebed was born at Egypt's gate, when Levi went in.
So what are you going to do now?
"32 The days of Terah were two hundred five years; and Terah died in Haran." Gen. 11:32 (NRSV)
Add the verses together. Terah died at 205 and Abraham was 75 when he left Haran.
Acts 7:4 says that Abraham left Haran after the death of his father. Therefore, Abraham was born when Terah was 130 years old.
You are going off of extra-Biblical chronology. This is unnecessary - the Bible itself gives you everything you need to figure everything out - you do not have to reference the book of Jashar.
No, the Bible itself does not give you everything you need to figure out the chronologies, straight forward -but you can deduct with much work and discover the ages and times.
You need the histories to understand the story line and the chronologies which correlate with the Torah account.
You assume Terah was age 130 when Abram was born because you use extrabiblical accounts that tried to figure everything out without all the information because the books were not available after the dispersion, to everyone -and still are not all available to this day, as Ezra tells us; but he actual ages can be discovered by deductions using the Torah and adding the many passages that tell when certain things are done.
Abraham left Haran two times, and the Torah record can be used to discover that, but Jasher has the chronology straight forward, without having to deduct and add what is not so plainnor needs to be, because it is plain in another place -but both correlate.
The fact is that the chronology is in Jasher, and for that reason it is not listed in chronological order in the Torah account, and you can prove it by just a few verses:
Japheth is older than Shem, but it looks as if they are triplets, if one is left in the dark without the facts and thinks the Torah account is chronological, but the Torah itself disproves the assumption that Shem is the same age as the others.
It also looks as if Abram, Nahor and Haran are triplets if you believe Genesis is in chronological order on their births -they are not!, and the Torah account proves they are not -if you add up certain facts.
It also appears [if you discount the facts elsewhere], that Issac died before even Joseph was sold as a slave in Egypt, if you think his death is in a chronological order to Jacob's coming back to canaan, but it is not, as Torah proves!
Gen 35:28 And the days of Isaac were an hundred and fourscore years.
Isaac died when Jacob was 120 years old, which was ten years before Israel entered Egypt. Joseph was age 39 years old, so Isaac died when Joseph was 29 years old, and was only in Egypt at that time for 12 years, so Isaac did not die until 12 years after Joseph was sold as a slave; and as the history book says, Isaac came to comfort Jacob when he thought Joseph had been slain.
Gen 5:32 And Noah was five hundred years old: and Noah begat Shem, Ham, and Japheth.
Gen 6:10 And Noah begat three sons, Shem, Ham, and Japheth.
Gen 10:21 Unto Shem also, the father of all the children of Eber,
the brother of Japheth the elder, even to him were children born.
Gen 11:26 And Terah lived seventy years, and begat Abram, Nahor, and Haran.
Terah was 70 years old when Abraham was born, but like Shem, Abram was not born first.
Terah was not the father of Sarah, but the grandfather of Sarah -making her his own daughter by law, just like Moses was the son of Levi, by law. Sarah was the daughter of Haran, and the sister of Lot and Melchi. In Genesis 11 she is called Ischa/princess, the daughter of Haran.
Gen 11:29 And Abram and Nahor took them wives: the name of Abram's wife
was Sarai; and the name of Nahor's wife, Milcah, the daughter of Haran, the father of Milcah, and the father of Iscah.
Sarah was 40 years old when she married Abram, who was age 50. she was barren til she was 90 years old and had been married to Abraham 50 years. They had lived in Egypt twice and Haran twice, and in Canaan four times. Genesis redacts the histories because they are already written in the Book of Jasher.
In Genesis 14, when Abram was living in Canaan, he chased Nimrod [who is called Am rapha El because "in him/the el/mighty one they/am/the people fell/rapha -at the tower], and Abram chased the three kings and got the mighty victory over them and got all the people and the goods back which they had taken away.
Abraham then met with Shem, who is called the" King of Righteousness" in Genesis 14 so as to morph him into a type of the Son of God who was to come; but since Shem lived 502 years after the flood, and died age 602, here you have him being blessed by Shem in Genesis 14, and very alive and well.
You cannot discount the historical records which tell us these facts, and all the Jews who study can tell you that Shem was Melchi -Zedek in Genesis 14, and that Israel was in Egypt for 210 years.
Now Terah died age 205, but he died after Abram left Haran. Abram left Haran two times, also, and Egypt two times, also.