One of the surprises recorded in the Bible is that God chose a nation to carry out God's salvation and this nation is the descendants of Abraham. "I will bless you and make your descendants as countless as the stars of the sky and the sands of the seashore; your descendants will take possession of the gates of their enemies, and in your descendants all the nations of the earth will find blessing, because you obeyed my command.” ( Genesis 22：17-18﹚ Abraham never had such extravagant hopes and yet God chose him, which was completely unexpected.

The Covenant on Sinai was another surprise. Deuteronomy records: “It was not because you are more numerous than all the peoples that the LORD set his heart on you and chose you; for you are really the smallest of all peoples. It was because the LORD loved you and because of his fidelity to the oath he had sworn to your ancestors, that the LORD brought you out with a strong hand and redeemed you from the house of slavery, from the hand of Pharaoh, king of Egypt.” ( Deuteronomy 7：7-8﹚ God fulfilled his covenant with Abraham and made the people of Israel his people and made himself their God” ( Deuteronomy 29：12﹚。

Deuteronomy also stated clearly: "The hidden things belong to the LORD our God, but the revealed things are for us and for our children forever, to observe all the words of this law." ( Deuteronomy 29：28﹚

After that, God made David the king of Judah and made a covenant with him. God would raise up a descendant in the family of David and the Lord would strengthen his kingship. “He it is who shall build a house for my name, and I will establish his royal throne forever.” ( 2 Samuel 7：13﹚ This is our Lord, Jesus Christ.

The purpose of the relationship between man and man and man and God is not for one man or one race but for mankind. This is the gift of God to all mankind.

The Bible records that most of the descendants of Abraham were exiled to Babylon. Abraham's dream seemed to be destroyed and the covenant with God ended. The entire people of Israel felt extreme disappointment and pain and found it hard to believe in God’s promise.

Prophets such as Isaiah, Jeremiah, and Ezekiel continued to comfort the people of Israel and tried to convince them to believe that God would build a better future for his people. God said through Isaiah: “Remember not the events of the past, the things of long ago consider not; See, I am doing something new! Now it springs forth, do you not perceive it? In the wilderness I make a way, in the wasteland, rivers.”( Isaiah 43：18-19﹚

The people of Israel should not think about the past, but should look forward to the future. "From now on I announce new things to you, hidden events you never knew. You never heard, you never knew, they never reached your ears beforehand...Now I want to announce new things, secret things that you don’t know." ( Isaiah 48：6-8﹚ "But this is the covenant I will make with the house of Israel after those days…. I will place my law within them, and write it upon their hearts; I will be their God, and they shall be my people. Everyone, from least to greatest, shall know me—for I will forgive their iniquity and no longer remember their sin” ( Jeremiah 31：33-34﹚ “I will sprinkle clean water over you to make you clean. I will give you a new heart, and a new spirit I will put within you. I will put my spirit within you so that you walk in my statutes, observe my ordinances, and keep them. You will live in the land I gave to your ancestors; you will be my people, and I will be your God.” ( Ezekiel 36：25-28﹚