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.18 16 And the men went on from there in the direction of Sodom; and Abraham went with them on their way. 17 And the Lord said, Am I to keep back from Abraham the knowledge of what I do; 18 Seeing that Abraham will certainly become a great and strong nation, and his name will be used by all the nations of the earth as a blessing? 19 For I have made him mine so that he may give orders to his children and those of his line after him, to keep the ways of the Lord, to do what is good and right: so that the Lord may do to Abraham as he has said. 20 And the Lord said, Because the outcry against Sodom and Gomorrah is very great, and their sin is very evil, 21 I will go down now, and see if their acts are as bad as they seem from the outcry which has come to me; and if they are not, I will see. 22 And the men, turning from that place, went on to Sodom: but Abraham was still waiting before the Lord. 23 And Abraham came near, and said, Will you let destruction come on the upright with the sinners? 24 If by chance there are fifty upright men in the town, will you give the place to destruction and not have mercy on it because of the fifty upright men? 25 Let such a thing be far from you, to put the upright to death with the sinner: will not the judge of all the earth do right? 26 And the Lord said, If there are fifty upright men in the town, I will have mercy on it because of them. 27 And Abraham answering said, Truly, I who am only dust, have undertaken to put my thoughts before the Lord: 28 If by chance there are five less than fifty upright men, will you give up all the town to destruction because of these five? And he said, I will not give it to destruction if there are forty-five. 29 And again he said to him, By chance there may be forty there. And he said, I will not do it if there are forty. 30 And he said, Let not the Lord be angry with me if I say, What if there are thirty there? And he said, I will not do it if there are thirty. 31 And he said, See now, I have undertaken to put my thoughts before the Lord: what if there are twenty there? And he said, I will have mercy because of the twenty. 32 And he said, O let not the Lord be angry and I will say only one word more: by chance there may be ten there. And he said, I will have mercy because of the ten. 33 And the Lord went on his way when his talk with Abraham was ended, and Abraham went back to his place.
Chap.19 1 And at nightfall the two angels came to Sodom; and Lot was seated at the way into the town: and when he saw them he got up and came before them, falling down on his face to the earth. 2 And he said, My masters, come now into your servant's house and take your rest there for the night, and let your feet be washed; and early in the morning you may go on your way. And they said, Not so, but we will take our night's rest in the street.