If God was planning to send a Savior into the world, then why did He choose a nation?

A family was required in order to bring forth the seed of the woman that would bruise Satan's head. But first, God had to find someone who believed in Him unconditionally. That someone was a man named Abraham, who is referred to in the New Testament as the “father of all who believe.” Although Abraham had every reason in the world not to believe God, he did so by faith. The Bible says that by faith Abraham believed God; he obeyed and followed His instruction to leave his father's house and enter into a strange land. The Bible says this about Abraham's wife: “Through faith also Sara herself received strength to conceive seed, and was delivered of a child when she was past age, because she judged him faithful who had promised” (Hebrews 11:11).

God revealed His intention regarding salvation through Abraham: “By faith Abraham, when he was tried, offered up Isaac: and he that had received the promises offered up his only begotten son” (Hebrews 11:17). That was a real test of faith. Sarah had finally conceived and they received the son God promised them; the one for whom they had prayed for more than 25 years. They were both well past the age of childbearing, but the unthinkable occurred and Isaac was born. Then God commanded Abraham to go to Mount Moriah and sacrifice Isaac as an offering. This request seemed ludicrous, yet the Bible says that Abraham obeyed God's command. He wasn't afraid that God could and would do the impossible. Verse 19 confirms: “Accounting that God was able to raise him up, even from the dead; from whence also he received him in a figure.”

Now a covenant between God and man was established through Abraham, who believed God. From that point God would reveal His intention through the Law, which was delivered some 400 years later--after Moses led the children of Israel out of Egypt's bondage. But Abraham is the beginning of Israel, God's chosen nation. And Israel is the father of the twelve tribes, of which Judah became the chosen one. Hence all the people of Israel became known as Jews. Later, Jesus said, “Salvation is of the Jews.”