Genesis contains some of the best known biblical stories, including the Hebrew account of the creation of the world, Adam and Eve, Cain and Abel, Noah's Ark, the Tower of Babel, the Call of Abraham, Abraham and the sacrifice of Isaac, Esau and Jacob, the marriage of Jacob, Jacob and Laban, Sarah and Pharaoh, Sarah and Abimelech, the battle of the Vale of Siddim, Sodom and Gomorrah, Jacob's wrestling with the angel at Peniel, Joseph and his coat of many colours, Joseph and the interpretation of Pharaoh's dreams, Onan and his sin, the seduction of Lot by his daughters, the Blessing of Jacob, the purchase of the cave of Machpelah, and others. Structurally, it consists of the "primeval history" (chapters 1–11) and cycles of Patriarchal stories (chapters 12–50)—Abraham, Isaac, Jacob (renamed, Israel), and concluding with Joseph. While it contains traditions that developed during the monarchy and some poetry that may be even earlier, scholars are divided on its authorshipalthough many think its final shape and message come from the Exilic and Persian periods (6th and 5th centuries BCE).
For Jews and Christians alike, the theological importance of Genesis centers on the Covenants linking Yahweh (God) to his Chosen People and the people to the Promised Land. Christianity has interpreted Genesis as the prefiguration of certain cardinal Christian beliefs, primarily the need for salvation (the hope of all Christians) and the redemptive act of Christ on the Cross as the fulfillment of covenant promises as the Son of God.
Chap.26 8 And when he had been there for some time, Abimelech, king of the Philistines, looking through a window, saw Isaac playing with Rebekah his wife. 9 And he said to Isaac, It is clear that she is your wife: why then did you say, She is my sister? And Isaac said, For fear that I might be put to death because of her. 10 Then Abimelech said, What have you done to us? one of the people might well have had connection with your wife, and the sin would have been ours. 11 And Abimelech gave orders to his people that anyone touching Isaac or his wife was to be put to death. 12 Now Isaac, planting seed in that land, got in the same year fruit a hundred times as much, for the blessing of the Lord was on him. 13 And his wealth became very great, increasing more and more; 14 For he had great wealth of flocks and herds and great numbers of servants; so that the Philistines were full of envy. 15 Now all the water-holes, which his father's servants had made in the days of Abraham, had been stopped up with earth by the Philistines. 16 And Abimelech said to Isaac, Go away from us, for you are stronger than we are. 17 So Isaac went away from there, and put up his tents in the valley of Gerar, making his living-place there. 18 And he made again the water-holes which had been made in the days of Abraham his father, and which had been stopped up by the Philistines; and he gave them the names which his father had given them. 19 Now Isaac's servants made holes in the valley, and came to a spring of flowing water. 20 But the herdmen of Gerar had a fight with Isaac's herdmen, for they said, The spring is ours: so he gave the spring the name of Esek, because there was a fight about it. 21 Then they made another water-hole, and there was a fight about that, so he gave it the name of Sitnah. 22 Then he went away from there, and made another water-hole, about which there was no fighting: so he gave it the name of Rehoboth, for he said, Now the Lord has made room for us, and we will have fruit in this land. 23 And from there he went on to Beer-sheba. 24 That night the Lord came to him in a vision, and said, I am the God of your father Abraham: have no fear for I am with you, blessing you, and your seed will be increased because of my servant Abraham. 25 Then he made an altar there, and gave worship to the name of the Lord, and he put up his tents there, and there his servants made a water-hole. 26 And Abimelech had come to him from Gerar, with Ahuzzath his friend and Phicol, the captain of his army. 27 And Isaac said to them, Why have you come to me, seeing that in your hate for me you sent me away from you?