Was the flood in Genesis a local flood or worldwide and how many people survived?
Genesis 6:13 And God said to Noah, “The end of all flesh has come before Me, for the earth is filled with violence through them; and behold, I will destroy them with the earth.”
Only Noah's family survived the flood (which the Bible says covered the whole world, judging all that breathes the air).
Genesis 7:21-23 “And all flesh died that moved on the earth: birds and cattle and beasts and every creeping thing that creeps on the earth, and every man. All in whose nostrils was the breath of the spirit of life, all that was on the dry land, died. So He destroyed all living things which were on the face of the ground: both man and cattle, creeping thing and bird of the air. They were destroyed from the earth. Only Noah and those who were with him in the ark remained alive.”
Gen 7:13-16: “On the very same day Noah and Noah's sons, Shem, Ham, and Japheth, and Noah's wife and the three wives of his sons with them, entered the ark-- they and every beast after its kind, all cattle after their kind, every creeping thing that creeps on the earth after its kind, and every bird after its kind, every bird of every sort. And they went into the ark to Noah, two by two, of all flesh in which is the breath of life. So those that entered, male and female of all flesh, went in as God had commanded him; and the LORD shut him in.
2 Peter 3:7 “by which the world that then existed perished, being flooded with water” The coming Judgment of the last days is compared to Noah’s flood. (Matthew 24:37-39; 2 Peter 3:6,7).
Jesus described how the world was in Noah’s day Matthew 24:37-40 “For as in the days before the flood, they were eating and drinking, marrying and giving in marriage, until the day that Noah entered the ark, and did not know until the flood came and took them all away .
Luke 17:27 “They ate, they drank, they married wives, they were given in marriage, until the day that Noah entered the ark, and the flood came and destroyed them all.”
Consider if the first worldwide flood did not destroy the earth then neither will the judgment be worldwide from Jesus. Since we know that the last day’s judgment will be universal and worldwide, what was true for the first judgment will be true for the second. “And, behold, I, even I, do bring a flood of waters upon the earth, to destroy all flesh, wherein is the breath of life, from under heaven; and “And, behold, I, even I, do bring a flood of waters upon the earth, to destroy all flesh, wherein is the breath of life, from under heaven; and EVERY THING THAT IS IN THE EARTH SHALL DIE” (Genesis 6:17), that is except for NOAH's family.
When they left the ark God renewed his command to Noah and his family as he did with Adam and Eve. Gen 9:1: “So God blessed Noah and his sons, and said to them: “Be fruitful and multiply, and fill the earth.
Gen 9:18-19 “Now the sons of Noah who went out of the ark were Shem, Ham, and Japheth. And Ham was the father of Canaan. These three were the sons of Noah, and from these the whole earth was populated. Gen.10 makes it clear that the whole human race comes from Noah's family (Gen.10:31-32) Gen 10:1 Now this is the genealogy of the sons of Noah: Shem, Ham, and Japheth. And sons were born to them after the flood.
2 Peter 2:5 speaking of God “and did not spare the ancient world, but saved Noah, one of eight people, a preacher of righteousness, bringing in the flood on the world of the ungodly”
1 Peter 3:21 in the days of Noah, while the ark was being prepared, in which a few, that is, eight souls, were saved through water.
Isaiah 54:9 “For as I have sworn That the waters of Noah would no longer cover the earth,
God promises never to flood the world like this again. It should be noted that we have had numerous local floods that were devastating. If the flood of Genesis was local then God did not keep his word.