Genesis 4, 6-9

In the story of Cain and Abel, the conversation between God and Cain uses words in a pun, to explain the nature of Gods words. I believe when God asked Cain "Where is Abel your brother?" he knew the answer to the question of which he just spoke. With the sarcastic phrase Cain responds with "I do not know; am I my brother's keeper?" he acts as if he has not seen or done anything to his brother Abel. God knows this response is not true, he asks Cain what he has done, and tells him "Your brother's blood cries out to me from the soil." The connect between Gods statement and Cain is the word "soil" for Cain is a farmer and spends his days in the field where his brother's murder took place. The theme of very distinct human passion related to this society is linked in the story of Cain and Abel to the relationship between siblings. The connection comes from the jealousy and anger Cain felt against his brother Abel when God accepted Abel's offerings but not Cain's. These strong feels lead Cain to murder his own biological brother. In the story of Noah's Ark and the destruction of all living things on the earth, other than one male and one female of each species of animal, bird and every creeping thing on the earth. The time period that the flood takes place is 40 days and 40 nights, a discussion or argument needs to be made about how long the flood actually took place. Noah explains sending a dove out to see if the waters have subsided on the face of the earth, which took three weeks for the bird to not return. I don’t understand how the number of 150 days comes into the story. Did it take 150 days for the water to completely drain, or did it take from the second month of Noah's six hundredth year to the first month of the six hundredth and first year?