The following is based on Genesis 17 – 18 ; Matthew 1:1-2; Luke 3:33-37 (Complete Jewish Bible and New International Version)
Keep remembering that the Bible was not meant to be a world history. It is a historical record of what happened in one family line. And though Adam and Eve had many other sons and daughters after they were commanded to leave their perfect home in the Garden of Eden, the only “branch” on the family tree that is traced completely in the Bible is the lineage that runs from Seth to Jesus, son of Mary … Son of God.
So far we’ve seen this much of Adam and Eve’s family tree:
Adam and Eve ==> Seth ==> Noah ==> Shem ==> (Abram & Sarai) ==> Abraham and Sarah
And this is where we left off:
Abram’s oldest son was named Ishmael (Yish ma’el). His mother was Abram’s wife Sarai’s maidservant. But God would provide another “firstborn” son. (And He would not forget that Ishmael, as eldest son of Abram, deserved an inheritance. The Lord God promised Abram that he would give Ishmael this blessing: “I have blessed him. I will make him fruitful and give him many descendants. He will father twelve princes, and I will make him a great nation.” (Genesis 17:20, CJB)
First however, the Lord decided to change Abram’s and Sarai’s names to Abraham and Sarah. It was as though He wanted there to be no mistake about which of the two half-brothers would be the “son of promise” — the one who would continue the family line from Adam to “the offspring” whom He had prophesied about WAY BACK IN THE BEGINNING. Remember what God said to the serpent after he tricked Eve into taking a bite of the forbidden fruit? … “I will put animosity between you and the woman, and between your descendant and her descendant; he will bruise your head and you will bruise his heel.” (Genesis 3:15, CJB)
Ishmael became the patriarch of the Arab race, which explains a lot about why they are now at odds with Israel!
Since the last post was so long, I’m going to keep this one short and to the point! (If you want all the details, read Genesis 18 through 20.)
Once again, as the descendants of Adam through the lineage of Noah’s three sons were spinning out of control and embracing EVIL, the Lord God STILL wanted RELATIONSHIP with GOOD people. He had promised Noah that the world would never again be destroyed by water, and God sealed that eternal promise with the sign of the rainbow. This time, He would approach the prospect in a slightly different way. He would adopt the family line of ONE CHOSEN PERSON as His own — the son whom He had miraculously created through the union of a man and woman who were assumed to be beyond the age of child bearing. Whoever favored this chosen son and his descendants would be blessed. Whoever cursed them would be cursed.
His name was Isaac.