Thought I understood the timeline of the Exodus, being 430 years but notice while reading the following verse a problem with my understanding:
And the name of Amram's wife was Jochebed, the daughter of Levi, whom her mother bare to Levi in Egypt: and she bare unto Amram Aaron, and Moses, and Miriam their sister.
My misunderstanding is that if Jochebed was the daughter, Levi, she would have had to be very old when having Miriam let alone her younger brother Aaron and Moses.
Jochebed was Amram's father sister. Amram had taken Jochebed for his wife. Amram lived to be 137 years (Exodus 6:20). Jochebed that was born in Egypt who was the daughter of Levi. It was Amram and Jochebed who were the parents of Aaron, Moses and Miriam (Numbers 26:59).
Now scripture tells us that Aaron, Moses and Miriam's father Amran lived for 137 years. Scripture tells us that the children of Israel was in Egyptian bondage for 430 years according to Genesis 15:13-14 and Galatians 3:17. Scripture records the birth of Moses in Exodus 2:1-3 and how his mother Jochebed hid him for three months from being killed. She couldn't hide him any longer and put him in an ark and placed him on the bank of the river. Scripture tells us also in Exodus 2:4 that the sister of Moses stood in the distance to see what would become of him.
We know Miriam was his sister and we can safely say that Miriam was older than Moses. As chapter two continues on and tells that the daughter of Pharaoh had saw the ark on the river bank and told her maidens to fetch it for her. After Moses was weaned by it's mother he was taken back to Pharaoh's daughter and she took him as her own child and Moses was raised up in the house of Pharaoh as God had spared his life. Moses ended up killing an Egyptian when he was grown and had went out among the Hebrew children and saw the Egyptian beating on one of his brethren and he killed him then hid his body. There was a witness to the Egyptian death and Moses got afraid that when Pharaoh heard about then he'd kill him.
Moses ends up fleeing to the land of Midian and marries Zipporah. After a certain amount of time went by the Pharaoh died and the children of Israel began to sigh because of the hard bondage and the began to cry out to God and God heard them. And God began to raise up Moses and equipping him to deliver the children of Israel from out of Egyptian bondage. Scripture tells us in Exodus 7:7 that Moses was 40 year old and Aaron was 43 year old when they spoke to the new Pharaoh who had doubled the work the Hebrew children had to do.
So what I'm thinking here is that the children of Israel was in slavary for 430 years. So it must have been in the latter part of those years in which Amram the father of Aaron, Moses and Miriam had lived out the 137 years of his life. The lifespan was longer back then and Moses was 40 years old and Aaron was 43 when they first went to speak to Pharaoh to let God's people go. So if you was to take say 43 years being the age of Aaron off of the 430 years. Then at the birth of Aaron the children of Israel would have already been in Egyptian bondage for 387 years. Then if you took the 137 years in which Amram his father's lived on earth from those 387 years. The children of Israel at the time of Amram's birth would have been is slavary to the Egytians prior to his birth for 200 years. So it doesn't seem out of the ordinary based on the lifespan of the people as they lived longer lives than they do now.